Understanding Flame Resistant Fabrics

What Are Flame Resistant Fabrics?

Flame resistant (FR) fabrics are materials engineered to resist ignition and prevent the spread of flames. They play a vital role in protecting end users from fire hazards and exposure to high temperatures. FR fabrics are incorporated in protective garments that are critical pieces of personal protective equipment (PPE) in many industrial settings, firefighting and emergency response services, and military operations.  

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Definition and Importance of FR Fabrics

Flame resistant fabrics are designed to self-extinguish when exposed to flames, minimizing the risk of burns and injuries. Self-extinguishing means that while the material may ignite when exposed to a flame, the material will not continue to burn once the flame source is removed. A fabric that self-extinguishes buys the wearer more time to remove themselves from the flame source. 

Inherent Flame Resistant Fabrics: 
Some fibers are naturally flame resistant and are known as “inherent FR” fibers. Their flame resistance is an intrinsic property of the molecular structure of the fibers and cannot be removed, making them favored components in durable FR fabrics. Commonly used inherent fibers are modacrylics and aramids. Inherent fibers can be combined with other natural or synthetic fibers to create fabric blends. Those blends offer the best of each fiber’s benefits, such as the protective qualities of a modacrylic fiber and the comfort qualities of cotton. 

Inherent FR Fabrics at TenCate Protective Fabrics:
TenCate Protective Fabrics manufactures a variety of FR fabrics with inherent fibers, such as Tecasafe® Plus, Tecasafe® One, Evolv®, Omniweave™, and Genesis®.  

These fabrics are valued for their durability and reliability, maintaining their protective properties throughout the service lifespan of the garment. Tecasafe® Plus is made with modacrylic fibers. Omniweave™ is a legacy product featuring a DuPont™ Nomex® construction, which is an example of an aramid fiber. Genesis® is an alternative baseline fabric solution also made with aramid fibers. Learn more about Inherent FR Fabrics. 

Treated Flame Resistant Fabrics: 
Treated FR fabrics are flame resistant as a result of a chemical treatment applied to the fabric. These are produced by treating regular fibers with flame-retardant chemicals. Various fibers that are not inherently flame resistant, including cotton and  polyester, are used in treated FR fabrics. Treated FR fabrics offer flexibility in design and cost-effectiveness, making them suitable  for multiple applications. Learn more about Choosing Treated FR Fabrics.  

Importance of Quality Flame Resistant Fabrics

Flame resistant fabrics are essential for ensuring the safety and protection of workers in environments where fire and electrical hazards are prevalent. FR fabrics are a part of mandatory PPE in hazardous workplaces because they serve as a worker’s last line of defense in the event of a fire or electrical event. To be compliant with safety regulations and to ensure a strong safety culture, these workplaces must have their workers outfitted in FR garments. 

Reduce the Risk of Severe Injuries and Fatalities

FR fabrics can significantly reduce the risk of burns and other fire-related injuries by resisting ignition and being self-extinguishing. This protection can be crucial for saving lives and minimizing the severity of injuries in the event of a fire. FR garments are the last line of defense for workers exposed to flames or electrical arc hazards and are a critical piece of safety equipment. 

Comply with Safety Regulations and Standards

Ensuring compliance with industry standards and safety regulations is vital for any organization. Using high-quality FR fabrics ensures compliance with stringent standards such as NFPA , NFPA 70E, and ASTM F. Compliance with these standards is essential for meeting performance requirements and ensuring the highest levels of safety in hazardous environments. At TenCate Protective Fabrics, our products either meet or exceed all applicable standards. Learn about NFPA ’s most recent update here. 

Build a Strong Safety Culture

Knowing that effective protective measures, including wearing the correct protective workwear, are in place fosters a safer and more secure work environment. For employers, investing in high-quality FR fabrics demonstrates a commitment to the well-being of their workforce, which can improve productivity and morale. Employers can be confident in the protection of their workforce, while employees gain assurance from the quality of their FR garments. When workers are engaged in their company’s safety culture and invited to give feedback on their protective workwear, they benefit from the knowledge that they are truly valued by their organization. Bolster Your Safety Strategies with Stress-Reducing Tips for Safety Managers. Learn more on how to bolster your safety strategies with Stress-Reducing Tips for Safety Managers. 

Enhance Comfort and Durability

Modern high-quality FR fabrics are designed to be both protective and comfortable. Lightweight, breathable materials can help workers perform their duties with less discomfort, even in demanding conditions. Comfort is also integral to safety by making it less tempting to adjust garments in noncompliant ways. The improper wear of FR garments, such as rolling sleeves or untucking shirts, can open workers up to much greater risk of injury or fatality in an incident. The enhanced durability of modern FR fabrics means they provide long-lasting protection, reducing the need for frequent replacements, which is better both for budgets and the environment. Discover the comfort and durability of our fabrics. 

Support Environmental and Economic Sustainability 

TenCate Protective Fabrics is committed to our sustainability journey. As our industry continues to innovate, sustainability will remain a core priority, both in terms of environmental impact and economic value. Our FR fabrics are designed for longevity, reducing waste and the need for frequent replacements, lowering long-term costs. Moreover, our manufacturing processes aim to minimize environmental impact, supporting broader corporate sustainability goals. Learn about how circularity in protective workwear will lead to a more sustainable future. 

Flame resistant fabrics are indispensable in high-risk environments, providing necessary, compliant protection with increased comfort and durability. TenCate Protective Fabrics continues to innovate and improve FR solutions, ensuring that our products meet the evolving needs of various industries. For more detailed insights into our flame resistant fabrics portfolio, click here. 

Types of Flame Resistant Fabrics at TenCate Protective Fabrics

Flame resistant (FR) fabrics are categorized based on their manufacturing process and properties. Understanding the different types of FR fibers and fabrics can help you choose the right material for specific applications and environments.  

Inherent Flame Resistant Fabrics

Because inherent FR fabrics are made with inherently flame resistant fibers that are engineered at the molecular level to be flame resistant, they offer consistent, durable protection throughout the lifespan of the garment in which they are used. 

Explore Our Inherent FR Products:

• Tecasafe® Plus
• Tecasafe® One
• Tecasafe® 360+
• Omniweave™/Genesis®
• Oasis™
• Tuffweld™
• Evolv®

Here’s a quick rundown of our inherent FR products for industrial safety with some of their key features: 

Inherent FR fabrics are particularly suitable for environments where long-term, consistent protection is critical. For workers who must always wear FR but who face a relatively lower risk of an incident occurring, investing in inherent FR is an economical choice. Because the garment is less likely to need to be replaced frequently due to an incident, the cost is spread out over a longer garment lifespan, and the end user gains all the comfort benefits offered by modern inherent FR fabrics. For all the details on each of our inherent FR fabrics listed above, explore our inherent FR fabrics page. 

Treated Flame Retardant Fabrics

Treated FR fabrics are produced by applying flame resistant chemicals to fabrics based on cotton blended with polyester, para-aramid, or polyamide. The chemical treatment fully penetrates the fibers and is bonded throughout the entire fabric, rendering the fabric flame resistant for the lifetime of the garment. 

• FR-treated fabrics offer excellent protection against molten metal splashes. For this reason, protective clothing made with FR-treated fabrics is the standard solution in many steel and metal environments.
  
  
• In addition to protecting against flames and molten metal splashes, the chemical treatment also gives these fabrics adequate performance in arc flash protection. This is why markets like utilities and oil and gas use FR-treated fabrics. 

Treated FR fabrics are a good choice in industries where wearers are more consistently exposed to risk factors, such as sparks or molten metal splashes in welding activities. Because the garments will need to be replaced more frequently and treated FR fabrics are usually at a lower price point than inherent FR, it makes sense to choose treated FR fabrics for applications that necessitate higher garment turnover rates. Replacing more expensive inherent FR products at the same rates would be less cost-effective. 

Cross-Segment Innovation

Flame resistant (FR) fabrics are essential in numerous industries and applications. They ensure safety and protection for all end users exposed to fire hazards. These fabrics provide critical protection, acting as the last line of defense for wearers. Garments made with FR fabrics are not just clothes, but key pieces of safety equipment.

Industrial Safety

Professionals working in oil and gas, electrical utilities, petrochemical, and other dangerous industries rely on FR fabrics. These environments can present significant fire and electrical risks, making high-quality FR fabrics essential for worker safety.

• Comprehensive Protection: Industrial safety fabrics must be designed to protect against a wide range of hazards, including flash fires, extreme heat, and electrical arc flash.
  
  
• Compliance with Standards: Industry safety regulations are in place to ensure that workers are protected according to the highest safety standards. Industrial protective workwear must comply with these standards.
  
  
• Comfort and Performance: Uncomfortable workwear can mean less-safe workwear. If workers are less distracted by discomfort caused by their PPE, they can perform their duties with greater efficiency, productivity, and most importantly, safety.
  
  
• Durability and Longevity: Industrial environments demand durable fabrics that can withstand continuous use and exposure to harsh conditions, as well as high-temperature industrial laundering.

Explore our industrial safety fabrics to learn how we protect workers in various industrial settings.

Cross-Segment Innovation

At TenCate Protective Fabrics, innovation doesn’t happen in silos. Our expertise across Emergency Response, Military, and Industrial Safety segments allows us to cross-pollinate advancements, ensuring that each industry benefits from the latest breakthroughs in fabric technology.

In the Emergency Response sector, firefighters rely on lightweight, breathable fabrics that enhance comfort without compromising protection. These advancements in moisture management and thermal regulation have influenced the Industrial Safety segment, where workers in extreme environments now benefit from increased breathability, helping them stay cooler and more comfortable on the job.

On the Military side, durability is paramount. Soldiers require rugged, high-performance fabrics that withstand the harshest conditions while maintaining flexibility and wearability. These innovations in strength and longevity have directly impacted industrial workwear, leading to more durable, longer-lasting protective fabrics that reduce replacement costs and enhance worker safety.

Similarly, developments in flame resistant technology—originally refined for military and emergency response applications—have translated into industrial workwear solutions that offer enhanced thermal protection, keeping workers safer in high-heat environments.

By leveraging advancements across these sectors, TenCate continues to push protective fabric technology forward. Whether it’s improved breathability, durability, or thermal performance, our innovations don’t just stay within one segment—they elevate protection and comfort across industries, creating a ripple effect of continuous improvement in safety and performance.

The Global Leader in Flame Resistant Fabrics: Where Innovation Meets Purpose

At TenCate Protective Fabrics, we are guided by our shared purpose of protecting the people that communities rely on. Our commitment to innovation, quality, and safety motivates us to continually develop improved products for the marketplace to give industrial safety programs a selection of high-quality protective, durable, and comfortable materials. These are some of the benefits of choosing TenCate Protective Fabrics products for your protective workwear needs:

Advanced Protection

Our FR fabrics are designed to provide the highest possible protection against fire hazards, meeting or exceeding relevant safety standards. Our fabrics’ advanced technology and materials ensure they perform reliably in the most demanding environments.

• Flame Resistance: Our fabrics are engineered to self-extinguish and prevent the spread of flames, buying the wearer critical time to get away from the fire source and significantly reducing the risk of burns and injuries.
• Thermal Protection: TenCate Protective Fabrics offers products with excellent thermal insulation, protecting wearers who work in the hottest environments from radiant heat exposure.
• Compliance with Safety Standards: Our FR fabrics meet and exceed stringent industry standards, ensuring maximum protection for workers in hazardous conditions.

Durability

TenCate Protective Fabrics’ products are known for their long-lasting performance and resistance to wear and tear, making them a cost-effective choice for protective clothing.

• Long-Lasting Performance: Our fabrics maintain their protective properties even after repeated use and high-temperature industrial washing, ensuring consistent protection over time.
• Resistance to Wear and Tear: Our fabrics are engineered to withstand harsh conditions and offer exceptional durability, reducing the need for frequent replacements.
• Reliable Protection: The durability of our fabrics ensures that they continue to provide reliable protection throughout their lifespan, giving users confidence in their safety gear.

Comfort

Safety is the number one priority, but comfort is an extremely close second. Ensuring our fabrics are comfortable to wear for extended periods is crucial to supporting their protective qualities by encouraging compliant wear. Focusing on comfort in developing advanced products helps improve not only worker performance and satisfaction but also safety.

• Breathability: Our fabrics are designed to be breathable, allowing air to circulate and keeping wearers cool and comfortable.
• Lightweight Design: Despite their protective capabilities, our fabrics are lightweight, minimizing the burden on the wearer and allowing for greater mobility.
• Softness and Flexibility: We offer fabrics with more softness and flexibility to enhance comfort, making them suitable for long shifts and strenuous activities.
• Ergonomic Fit: Our protective fabrics are designed to fit ergonomical garment designs, providing ease of movement and reducing fatigue.

Durability and Economic Benefits

TenCate Protective Fabrics is committed to maximizing product lifespans and the economic value of our products. Increased durability has the added bonus of reducing environmental impact, and globally, we are also committed to sustainability.

• Cost Effective: Our fabrics’ durability and longevity reduce the frequency of replacements, offering significant cost savings over time.
• Sustainable Practices: Our manufacturing processes are designed to minimize environmental impact and push the industry toward a more sustainable future while working toward our own broader corporate sustainability goals.
• Recycling Initiatives: We engage in recycling initiatives wherever we can and partner with a charitable organization to reduce materials waste and our environmental footprint, promoting a more sustainable future for the textiles industry.

By choosing TenCate Protective Fabrics, you invest in maximum protection, long-lasting durability, and exceptional comfort. Our dedication to quality and innovation ensures that our fabrics meet the highest safety and performance standards, making them the preferred choice for protective clothing across various industries.

Leveraging New Technologies

Industrial safety is constantly evolving, and at TenCate Protective Fabrics, we stay ahead by developing solutions that meet the changing demands of today’s workforce. Our latest innovations are designed to enhance both protection and comfort, ensuring that workers have the best possible gear for the job.

Casualization Movement

One of the biggest industry trends is the demand for greater mobility and flexibility in protective workwear. Tecasafe® 360+ answers this need with built-in four-way stretch, offering unmatched comfort and freedom of movement while maintaining the proven durability and flame resistance that industrial workers rely on.

Going Ecogreen®

Sustainability is another key focus, driving us to develop materials that reduce environmental impact without compromising performance. Tecasafe® Ecogreen® leads the way with a BCI® cotton-based and recycled PET bottle blend, making it one of the most sustainable FR fabrics on the market while delivering the same trusted protection and comfort.

As industrial workplaces become more demanding, we continue to innovate with fabrics that are lighter, more breathable, and more durable than ever before. By listening to end users and adapting to industry trends, we ensure that our fabrics not only meet but exceed expectations.

At TenCate Protective Fabrics, innovation is never static. We’re committed to pushing the boundaries of safety, comfort, and sustainability, delivering next-generation solutions that keep industrial workers protected and productive.

Frequently Asked Questions (FAQs)

What Are Flame Resistant Fabrics?

Flame resistant fabrics are materials designed to resist ignition and self-extinguish in a set amount of time. These fabrics protect individuals working in high-risk environments with heat, fire, or electrical hazards, such as emergency response, industrial safety, military operations, and various industrial settings. Explore the TenCate Protective Fabrics fabric selector tool to find the best flame resistant fabrics for your needs.

How Do Flame Resistant Fabrics Work?

FR fabrics are made from a blend of either inherently FR fibers or a chemically treated FR fibers. Inherent FR fabrics are made from fibers that are intrinsically flame resistant, while FR-treated fabrics undergo a process that imparts flame resistant properties to the fabric through a chemical treatment. Both methods enable the fabric to self-extinguish when exposed to flames, meaning it does not continue to burn when the flame has been removed, which can help reduce injury.

What Standards Do Flame Resistant Fabrics Need to Meet?

FR fabrics must comply with various industry standards to ensure their effectiveness and safety. Key standards include NFPA for protection against short-duration thermal exposures, NFPA 70E for electrical safety, and ASTM F for textile materials used by electrical workers. Meeting these standards helps ensure that the fabrics provide adequate protection and performance according to these governing regulations. If a garment does not meet the required standards for a specific application, it should not be considered compliant and it will not properly protect against the relevant risks.

Who Needs to Wear Flame Resistant Garments?

Government regulators determine whether flame resistant PPE is required for specific occupations based on the risks involved. In industries where workers face potential exposure to hazards such as flash fires, open flames, or electrical arc flashes, compliance with these regulations ensures proper protection. While comprehensive safety programs are designed to prevent such incidents, FR garments serve as the last line of defense when hazards do occur—playing a critical role in a worker’s ability to return home safely at the end of the day.

How Do I Purchase TenCate Protective Fabrics Products?

If you are an end user or a safety professional interested in ordering FR workwear made with TenCate Protective Fabrics materials, you can purchase garments constructed with our fabrics through a garment manufacturer or distributor. We do not sell protective garments directly to the market; we manufacture the fabrics that go into the garments. We can, however, answer any questions you may have about our products and help guide you through the process and make sure you get what you want. Reach out to us here.

What Are the Benefits of Using TenCate Protective Fabrics Products?

At TenCate Protective Fabrics, we pride ourselves on delivering not only the highest-quality protective fabrics possible in terms of safety, comfort, and durability, but we also offer top-of-the-class customer service and take a consultant approach to our role in the supply chain. When you partner with TenCate Protective Fabrics, you benefit from our team’s deep well of knowledge and experience in the safety industry.

We encourage you to reach out to us with any questions about protective fabrics, the market in general, industry trends, or your safety program at any time. We are always more than happy to discuss better safety strategies and ensure you have the information you need to make the best selection for your needs.

How Should Flame Resistant Fabrics Be Maintained?

Proper maintenance is crucial to preserving the protective properties of FR fabrics. For detailed maintenance guidelines for a specific product, refer to the care instructions provided by your garment manufacturer or distributor.

How Do You Know You’re Selecting the Right FR for Your Needs?

Proper FR garment selection is no easy feat, but it can be made simpler with these tactics:

Stay up to date with industry trends, updates, and standards by regularly attending trade shows, subscribing to relevant publications and newsletters, and staying engaged with your partners in the value chain. Then, when it’s time to order new FR workwear, you already have an idea of what’s available and don’t have to begin your research from scratch. Secondly, leverage the knowledge of partners at fabric manufacturers (like us) and garment manufacturers and distributors to help you get tailored information for your specific needs.

Third, ensure you have recently performed a thorough risk assessment to determine the risks you need to protect your workers against and look for products certified as compliant with the relevant standards. Using all three of these tactics in concert and keeping open lines of communication with your suppliers will help you make a confident decision.

Last updated: February 2nd,

Should you use 100% cotton or a polycotton blend? When do you need fire resistance? What does flame retardant mean? We’re here to help you find exactly what you need in all of these confusing options!

Your type of research will determine what lab coat is best for you. Healthcare professionals and researchers working with hazardous materials shouldn’t wear the same lab coat. Fire resistance often comes at a cost of chemical resistance and vice versa. So…

Which lab coat material is right for you?

The fabric you choose makes all the difference. This simple guide walks you through the most common fabrics used for lab coats, how to choose the correct lab coat fabric, and how to clean each type of lab coat.

100% Cotton Lab Coats

Cotton lab coats (like these) are incredibly comfy, lightweight, and long-lasting. It's the preferred material for lab coats by many scientists and is often required for college chemistry lab. Cotton is a breathable fabric, although it is frequently combined with polyester since it wrinkles readily. It may also come with fire-resistant (FR) coatings, however, industrial laundering and acids can degrade this coating. It sometimes has a stain-release finish, but this can also deteriorate over time.

Cotton lab coats are somewhat solvent-resistant but susceptible to acid spills so barrier layers like long butyl gloves should be worn with these coats when handling strong acids. High-quality lab coats are often 100% cotton and are usually more expensive than poly-cotton blends. Cotton can be mixed with other fibers for wrinkle-resistance and flexibility while maintaining its FR rating, like the 88% cotton/12% nylon blend commonly used.

✅Pros: Good for freshman chemistry lab, clinical settings, and research laboratories where there is some work with flammables, heat, and flame, and where splash resistance to acids is not a concern. Usually the most comfortable fabric.

❌Cons: When working with corrosive materials like acids, cotton lab coats should be accompanied by a chemical splash apron and long acid-resistant gloves to cover arms. Cotton may also shrink if laundered at high temperatures.

Here is a short video showing a durable cotton lab coat versus others blended with synthetics:

100% Polyester Lab Coats

Polyester is a synthetic material that is basically a weave of plastic fibers. Polyester is robust and long-lasting. It’s easier to care for and dries considerably faster than cotton, and it also provides a good “barrier” to acids and biological contaminants because it does not absorb liquids. It's also less expensive to manufacture than cotton. This makes it commonly used for biomedical research and blood testing labs.

However, polyester is a huge safety hazard when working around heat or flames like Bunsen burners or hot plates. Polyester should not be used in environments with pyrophoric chemicals, open flames, or any flammable risks, as it burns easily and melts to your skin, inflicting serious skin burns while trapping you inside.

✅Pros: It’s suitable for biomedical laboratories where biological pathogens and diseases are present. It's inexpensive, doesn't shrink, and keeps contaminants on the outer surface.

❌Cons: Uncomfortable, scratchy and stiff. Melts easily and should not be used around heat sources or where combustible solvents are present.

Cotton lab coats treated with flame retardant coating

The chemical treatment given to these fabrics in the factory gives them their flame retardant properties, not the inherent properties of the fiber. This chemical treatment soaks through the fiber and binds it throughout the fabric. The fabric becomes flame retardant and maintains that property throughout the garment's lifetime unless you break the manufacturer's recommended washing conditions which can include using high-temperature water or bleach during laundering.

Cheaper FR-treated materials wear down quickly when washing, but some more advanced brands like Westex say that their FR treatment will remain effective for the lifetime of the garment. These materials have similar properties and performance to 100% cotton plus the enhanced resistance to flames.

✅Pros: For labs with a fire concern, this is preferable to poly/cotton. Somewhat solvent-resistant.

❌Cons: Not fluid resistant; especially susceptible to acids.

Polyester/Cotton Blend Lab Coats

Most cheaper lab coats (<$30) are made of a polyester and cotton blend. It's breathable, light, and simple to wash, with moderate splash and chemical protection (though this is dependent on the manufacturer). Polyester-cotton blends with at least 35% cotton are appropriate for usage in an atmosphere without open flames, albeit they are not as soft and breathable as 100% cotton. They are good for doctors, pharmacists, and clinical settings but are typically not allowed in college chemistry lab courses because of the open flames.

Poly/Cotton Blend Chemical Properties Flame Resistance Durability 80/20 Poly/Cotton Blend Higher polyester content makes it suitable for working with chemicals or biological materials Higher polyester content is NOT suitable when working with flammable powders or solvents Higher polyester content makes it more durable and easy to launder 65/35 Poly/Cotton Blend

A minimum of 65% polyester gives good protection against acids

Not flame resistant but can be used when there are no open flames, hot plates, or strong oxidizers Less durable than 80/20 blend, still wrinkle-resistant 40/60 Poly/Cotton Blend

Not recommended when working with acids

Not flame resistant but can be used for an environment where there are no open flames, hot plates, or strong oxidizers Low polyester decreases durability

✅Pros: Appropriate for use in clinical settings and research laboratories that handle biological materials without heat or flame. Durable and inexpensive.

The company is the world’s best Pure Cotton Flame Retardant Fabric supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.

❌Cons: It melts easily to your skin and is not considered appropriate for working with flammable materials, open flames, or near high heat sources. Typically not as comfortable or breathable as 100% cotton.

Nomex Lab Coats

Nomex is one of the more expensive options on this list, but it's ideal for environments with significant fire hazards, open flames, electric arc hazards, or pyrophoric compounds. It is difficult to ignite and acts as a fire and heat barrier. Because the fibers are inherently flame resistant, not just coated, the flame resistance is retained in industrial laundering as long as bleach is not used. Most FR clothing for firefighters and stunt doubles are made from Nomex.

✅Pros: It's tough, flexible, and tear-resistant, as well as resistant to most chemicals. Appropriate for use in research facilities where open flame and pyrophoric substances are common and pose a serious fire risk.

❌Cons: When exposed to chlorine bleach, Nomex decomposes. Susceptible to non-polar organic solvents like acetone. Most lab coats made of Nomex are over $120. Style and color options with Nomex are extremely limited.

Nomex IIIA Lab Coats

The Nomex IIIA interlock knitting fabric is made up of 93%Nomex, 5% Kevlar, and 2% P-140. In the event of a fire, Nomex IIIA is a flame-resistant, high-temperature-resistant fiber that does not melt or drip. You’ll often see this marketed as “Shield CXP” which gives the rare combination of FR and CP (Chemical Protection).

The capacity of Nomex to carbonize and thicken when subjected to severe heat is a major factor in the protection it provides. This common reaction strengthens the barrier between the heat source and the wearer's skin, reducing burn injuries.

When exposed to heat and flame, the 5% Kevlar adds extra strength and structural integrity. Electrostatic discharge (ESD) protection comes from the 2% P-140 electrically conductive fibers. Nomex IIIA also has better chemical resistance than regular Nomex.

✅Pros: The flame-resistant protection of Nomex IIIA fabric cannot be washed out or worn away, unlike flame-retardant treatment applied to the surface of cotton or cotton blends. This is the most protective material currently on the market.

❌Cons: Lab coats made of Nomex IIIA are usually over $200 and have limited color and style options. The chemical resistance may deteriorate if laundered with bleach. Susceptible to non-polar solvents like acetone.

Polypropylene Lab Coats

Most disposable lab coats are made of a heavy polypropylene weave. It's actually light and breathable, with high resistance to moisture absorption providing great “barrier” protection to biological materials and dust mitigation in clean rooms. Carbon fibers are sometimes added to polypropylene lab coats to improve their antistatic (ESD) properties. If you work in a biohazard lab or semiconductor fab, you may need to wear a disposable lab coat that is made from polypropylene.

✅Pros: Best in biomedical laboratories where pathogens and cross-contamination are a concern. It’s a short-term use item that is also inexpensive.

❌Cons: When exposed to UV light, it swiftly degrades and is extremely combustible near flames. They also tear easily at the seams and pockets.

Nylon blend Lab Coats

Nylon is a petrochemical-based synthetic fiber. It is recognized for its excellent softness, strength, and durability. Nylon is easy to dye and it is available in a wide range of colors. Because nylon melts easily when exposed to fire, it needs to be woven in small fractions with flame-resistant materials.

Nylon is not usually used by itself to make lab coats. Cotton/nylon blends such as "88/12", the most common can give better wrinkle resistance, stretch and durability than 100% cotton. Some 88/12 blends are FR-rated, but the FR performance varies by manufacturer.

✅Pros: Lightweight and strong. It’s also wrinkle-resistant and easy to launder.

❌Cons: Cannot be used in high concentrations while maintaining flame resistance. 12% nylon in cotton can be FR rated if the fabric is treated by the manufacturer.

Modacrylic Lab Coat Blends

Modacrylics are a type of synthetic copolymer. One of the benefits of the Modacrylic lab coat is that it is exceptionally resistant to rips and tears, as well as having great wrinkle resistance. Modacrylic is a soft, durable, and pleasant fabric that is also easy to care for. It's often used as a blend with other fibers like Lyocell and Aramids in the Westex DH fabric, which is FR and arc-flash rated. This material is only advised when your safety officer specifically recommends it for your work environment.

✅Pros: It's fire-resistant, resistant to chemicals and solvents, rip- and tear-resistant, and doesn't wrinkle easily.

❌Cons: It is heat-sensitive and should not be steamed or washed at high temperature.

Rayon Lab Coat Blends

Rayon is a fabric manufactured from purified cellulose fibers, usually extracted from wood pulp. It's less expensive than cotton, but it has similar properties such as being breathable, lightweight, and absorbent, making it a popular choice for manufacturers trying to add some comfort to their low-cost polyester lab coats.

It's common to have blends of around 50% polyester, 45% Rayon and a few percent Spandex for a very breathable, stretchy and wrinkle-free lab coat. However, Rayon is easily degraded by acids and is only recommended in light-use environments where chemical and fire hazards are not present. These should normally not be used in non-clinical research environments.

✅Pros: It’s cheap and fairly durable.

❌Cons: It’s not great against acids or liquids and catches fire easily.

Tyvek Lab Coats

Rather than a fabric type, Tyvek refers to a brand. Tyvek garments are made of flash spun high-density polyethylene, a nonwoven material that is exclusive to DuPont. You may have felt it before if you've ever come across those fibrous tear-resistant off-white large envelopes or seen a pro painting crew in white jumpsuits.

It provides an ideal balance of protection, durability, and comfort. It’s commonly used for special applications that require total impermeability of dust and dirt particles. Many professionals use this type of coverall when dealing with substances such as asbestos, lead dust, spray paint, and radioactive substances.

✅Pros: Extremely durable, rip and tear-resistant. Great for protecting against airborne biological and radioactive material.

❌Cons: It's not a good idea to use it in places where there's a high risk of fire. Not as comfortable or breathable as cotton lab coats.

ESD/Anti-Static conductive lab coats

ESD/anti-static lab coats prevent electrostatic discharge and keep the wearer safe in static-prone areas. Anti-static lab coats are used in a variety of settings, including technology manufacturing, explosive environments, fire control, and electrical work. Typically, it's constructed of a poly-cotton blend with a few percent by weight of conductive fibers aligned vertically to “ground” the wearer. ESD lab coats can be made of many materials with widely varying properties.

✅Pros: Prevent electrostatic discharge. Provide a good barrier against water-based liquids, dust particles, and are resistant to light chemical splash.

❌Cons: Usually no flame resistance. Often ESD protection is an unnecessary feature that adds cost.

Lab Coat Fabric Weight Guidelines

Do you ever see words like "7 oz cotton" or "142 gsm Nomex" when choosing a lab coat? These are the fabric weights, which refer to what a square yard of fabric would weigh (in ounces) or a square meter would way (in grams for "gsm"). You can convert between these, but for reference, 5 oz is 142 gsm and 7 oz is 198 gsm.

So what fabric weight is good for a lab coat? Consider the breathability of the fabric, the temperatures you're working in and whether or not you're worried about puncturing or tearing.

• 5 oz or less would be considered "light weight" for lab coats
• 6-7 oz is usually comfortable if it's cotton, and is medium weight
• 8-10 oz would be considered heavy-duty for a lab coat

Also make sure you don't confuse the fabric weight with chemical or fire protection. It really isn't correlated. You'll need to check the stats on the lab coat from the manufacturer to understand the safety limitations of each material. For example, a 4.5 oz Nomex IIIA lab coat gives much better protection than a 10 oz cotton/poly blend.

What is the difference between Flame Resistant (FR) and Flame Retardant Lab Coats?

Flame resistant (FR) lab coats are made from materials that are intrinsically non-flammable like Nomex, while flame-retardant lab coats are made from materials that can normally catch fire but are chemically treated in production to burn slowly or self-extinguish, like cotton.

The “FR” acronym typically applies to Flame Resistance, also known as Fire Resistance, which is normally preferred over Flame Retardant materials. However, some textile manufacturers like Westex have data showing that their FR treatment process is so good, it doesn't degrade during washing if the right laundering conditions are used.

FR lab coats should use “NFPA ” certified materials, which will be noted on the tag. This is a minimum performance specification by the National Fire Protection Association that helps standardize claims of FR protection across various materials and designs. In many labs, FR lab coats are a different color to avoid mix-ups and improve compliance.

Both fabrics and specific lab coats can be “FR” rated and need to be certified individually with several flammability tests. Although FR fabric generally gives a lab coat good protection, design flaws such as large vents or melting fasteners could negate the performance of the fabric.

The NFPA certification is a pass/fail test, with the passing criteria including less than 50% body burn in a simulated manikin burn test. Some “FR” lab coats may pass with 40% body burn while the very best materials may pass with only 10% body burn. Check the manufacturer’s NFPA testing certificate for this “body burn” report if this level of detail is important for your job function. Remember, these materials are simply meant to not make the fire worse (like polyester would). They don’t give 100% protection in serious fires.

If you use a Flame Resistant or Flame Retardant lab coat, you must be very careful to launder them within the conditions set by the manufacturer. Common treatments like bleach and very high temperature water can reduce the performance and put you at risk. Spilling acids on your coat can also locally degrade the FR protection.

How to Clean and Wash Lab Coats in Research

When was the last time your lab coat was washed? Never?! Most lab coats should be washed regularly to remove chemical and biological residue that could harm you or contaminate your experiments.

If you’re used to throwing all of your laundry in a single load on hot, don’t do that here! You can ruin a great lab coat by washing it the wrong way. Bleach is incompatible with Nomex® and Fire Resistant lab coats. If available, use a dedicated on-site facility or off-site contractor who has been trained in potential hazards and washing conditions.

A weekly wash schedule is recommended for heavy use; washing should be monthly at worst for less regular use. Always wash or discard lab coats immediately after significant spills.

If your institution does not have professional laundering available, lab coats should be double-bagged for home transportation and cleaned separately from normal clothes. Never home-wash lab coats that could have contamination from carcinogens, biologically-harmful chemicals, dangerous pathogens, or corrosive chemicals.

Best practices for washing your lab coat:

• Unbutton all buttons, but zip all zippers before washing. Empty pockets!
• Check your lab coat tag and the manufacturer’s website for washing recommendations.
• The hottest water setting is often necessary for good cleaning, but can also ruin some lab coat materials.
• Never use bleach on lab coats unless the tag specifically says it’s OK. Bleaching an FR lab coat could reduce the fire resistance and allow burns when you think you’re protected.
• Dry according to the directions on the tag.
• Run the machine empty with bleach on hot to disinfect and clean the washing machine of any residual contaminants.

Chemical lab coat handling: Cleaning and Disposal

If a significant chemical spill occurs on clothes, or if the spilled substance is particularly toxic, corrosive, or persistent (non-evaporating), the lab coat must be disposed of according to hazardous waste disposal standards and will not be accepted for washing.

Contaminated lab coats should be thrown away and should not be washed if they have been contaminated by:

1. Corrosives or strong acids
2. Materials that can flow through Nitrile gloves (for example, organometallics such as methyl mercury); or
3. More than 250 milliliters of:

• Carcinogens
• Teratogens
• Toxic substances with an LD50 of 50 mg/kg.

A coat can be professionally washed and reused if the spill does not meet any of the above conditions.

Biological lab coat handling: Cleaning and Disposal

• For BSL-1 work, autoclaving before washing is recommended but not always necessary if there were no known contaminations or spills. Check with your institution.
• For BSL-2 work, autoclaving is required before washing your lab coat.
• If a known or suspected biological agent contamination/spill occurs all lab coats should be autoclaved (regardless of risk group assessment level or biosafety lab level).
• Biologically contaminated lab coats that are also contaminated with chemical or radioactive substances should not be autoclaved. This can cause dangerous chemical reactions or explosions.

Instructions for autoclaving lab coats:

1. Check with the manufacturer that the lab coat is autoclavable.
2. Collect lab coats in a lidded container with a Biohazard label, lined with an autoclave bag and labeled with contents and date.
3. Autoclave in a clear bag or well-labeled opaque bag. You don't want anyone to mistake this bag for waste!
4. Decontaminate the lab coats on a solid or pre-vac cycle in the autoclave. Use a Chemical Integrator (CI) for load verification.
5. After the autoclave, lab coats should be laundered by a professional service whenever possible.

Radiation hazard lab coat handling: Cleaning and Disposal

If a spill on the lab coat contains radioactive material, immediately notify EHS and/or Facilities Management. The lab coat will be sealed and disposed of as radioactive waste in a sealed bag.

References

MIT Lab Coats selection, use, and care

OHS Online: Do’s and Don’ts of lab coats

Columbia University Lab Coat information table

Virginia Tech PPE Use Guidelines

Guidelines for Selection, Use, and Care of Laboratory Coats (Univ. of Akron)

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Frequently Asked Questions (FAQs):

What are lab coats made of?

The most common materials are cotton and cotton/polyester blends. Cotton can be FR treated for better flame resistance. The best (and most expensive) material is Nomex IIIA, used by chemists around very dangerous chemicals. Other jobs require lab coats made out of polypropylene or Tyvek.

Do lab coats have to be 100 percent cotton?

Lab leaders will recommend 100% cotton lab coats when working around open flames like a Bunsen burner. Cotton burns more slowly and will not melt to your skin like polyester. However, other fabrics like Nomex, Nomex IIIA or FR-treated cotton blends can be substituted for 100% cotton if it has a NFPA fire-resistant certification.

Are cotton lab coats flammable?

A 100% cotton lab coat will still catch fire, unless it is treated with FR chemicals in production. However, cotton is preferred over polyester when working around open flames and heat sources. Always check the tags for NFPA certifications if flame resistance is important in your work.

How often should you wash your lab coat?

Wash lab coats weekly if using for several hours a day. Wash at least once per month for less frequent use. Refer to our washing guide above for care instructions by material and field of work.

How do I choose a lab coat?

Start by identifying the fabric you need based on the hazards in your workplace. This guide will help. If you deal with chemical and fire hazards, you want a closed collar, knit cuffs and snaps for quick removal. With those elements fixed, look for the best fit that will ensure you love wearing it every day.

For more Flame Resistant Fabric By The Yardinformation, please contact us. We will provide professional answers.