Flame-Resistant Lab Coats: When You Need Them and How to Source Them

Flame-resistant (FR) lab coats are needed where staff work with materials that can ignite or catch fire on contact with air, most clearly pyrophoric chemicals handled outside a glovebox, and are widely recommended where large quantities of flammable solvents or open flames are in use. Ordinary cotton and poly-cotton lab coats are not flame-resistant garments and should not be relied on for these tasks. Whether a role needs FR coats is a decision for your laboratory safety officer, based on a hazard assessment; the buyer's job is to source certified coats with the right documentation and to keep them separate from everyday workwear.

This post explains when FR coats come up, what the common standards say, how to source them and how to care for them. It is general guidance, not a substitute for your own safety rules.

When FR lab coats are needed

Pyrophoric and water-reactive materials

Pyrophoric chemicals can ignite spontaneously in air. Several US university safety programmes describe the NFPA 45 laboratory fire-protection standard as calling for fire-retardant lab coats where pyrophoric reagents are used outside the inert atmosphere of a glovebox. MIT's laboratory coat guidance states that a flame-resistant coat is required when handling pyrophoric substances outside a glovebox. Ohio State University's chemistry department applies a similar rule to pyrophoric and water-reactive work. These are examples of how institutions apply the requirement; check the current edition of any standard your organisation follows and your own site rules.

Flammable solvents and open flames

MIT's guidance goes further and recommends an FR coat when working with all flammable chemicals. Other institutions set their own thresholds based on quantities, procedures and the presence of ignition sources. Teaching labs using Bunsen burners, for example, may or may not require FR coats depending on their own risk assessment.

What FR coats do not cover

Flame resistance is a specific property. MIT's guidance notes that FR garment testing simulates a flash fire or arc flash, not a chemical fire, so a coat sold as flame-resistant has not necessarily been tested with flammable chemicals spilled on it. Many FR coats also offer little or no protection against liquid splashes. For chemical splash protection, see workwear lab coats vs protective lab coats.

Why ordinary lab coats are not enough

Coat type	Flame behaviour, in brief	Notes
Poly-cotton workwear coat	Not flame-resistant	MIT's guidance says limited testing showed poly-cotton burned readily on contact with pyrophoric chemicals, and that such coats must not be worn for that work
100% cotton workwear coat	Not a certified FR garment	Arizona State University's guidance notes that traditional 100% cotton coats have not been able to pass NFPA 2112 flash-fire or NFPA 70E arc-flash testing
FR-treated cotton	Flame resistance from a chemical treatment	MIT rates it as better than poly-cotton for fire hazards, but not fluid-resistant and degraded by acids
Inherently FR fibre (for example, aramid such as Nomex)	Flame resistance is part of the fibre	MIT notes limited testing showed it did not burn readily on contact with pyrophoric materials
Combined FR and chemical-resistant coats	Designed for both properties	Check exactly which chemicals and which tests the claims cover

The table summarises the published guidance listed in the sources; it is not a test result for any particular product.

Standards to look for

When sourcing FR coats, ask which standard the garment is certified to. Standards commonly cited in US laboratory guidance include:

• NFPA 2112: the standard for flame-resistant garments for protection against flash fire. University guidance on NFPA 45 commonly refers to FR clothing meeting NFPA 2112.
• NFPA 2113: the companion standard on selection, care, use and maintenance of those garments.
• NFPA 70E: an electrical safety standard that includes arc-flash protective clothing; relevant where electrical hazards are part of the risk.

Organisations following European practice may specify European standards instead. Whatever the standard, your safety officer should name it in the specification, and the supplier should provide the certificate and the manufacturer's user information.

How to source FR lab coats

FR coats are specialist PPE and are usually bought from a PPE or safety-clothing supplier rather than made to order by a uniform maker. A practical process:

1. Get the hazard assessment. Ask your safety officer which tasks and roles need FR coats, and to which standard.
2. Ask for evidence. Request the certificate, test report and user information for the exact model, not a range brochure.
3. Check the fibre. Know whether flame resistance is inherent or from a treatment, and what the user information says about how long it lasts.
4. Check other properties. If the work also involves splashes, ask what, if any, liquid protection the coat offers.
5. Fit and wear trial. FR fabrics can feel heavier or warmer. Let users try sizes and wear a sample for real tasks.
6. Plan laundering. Confirm that your laundry can follow the care instructions (see below) before you buy.
7. Mark them clearly. Make FR coats visibly different from workwear coats, so nobody picks up the wrong one.

Caring for FR coats

Care can affect flame resistance, so follow the manufacturer's instructions exactly.

• No bleach. MIT's guidance notes that both Nomex and FR-treated cotton coats keep their flame resistance through laundering over typical use only if bleach is not used.
• No home washing. MIT advises cleaning coats through a laundry service or designated work-area washers, not at home. Your site may have its own rules.
• No fabric softeners or other additives unless the manufacturer's care instructions allow them.
• Inspect regularly. Retire coats that are worn, torn, contaminated or past the manufacturer's stated life.
• Separate the laundry flow. Keep FR coats apart from ordinary coats so they are not processed with bleach by mistake.

A short checklist

• Hazard assessment names tasks and standard
• Certificate and user information on file
• Sizes and wear trial completed
• Laundry process confirmed in writing
• FR coats clearly marked and stored separately
• Staff trained on when FR coats are required

Budgeting and issuing

FR coats usually cost noticeably more than workwear coats, so many labs issue them only to named users who carry out the relevant procedures, or keep a pool at the point of use. If you use a pool, have enough sizes that everyone can find a coat that fits properly, because a coat that is too big can catch on equipment and one that is too small rides up and leaves gaps. Record who has each coat, when it was issued and how often it has been laundered, so you can retire coats at the end of the life the manufacturer states.

Where workwear coats still fit

Most staff in a laboratory or research building will not need FR coats for most tasks. Workwear coats remain the everyday garment for general lab work, meetings, teaching and administration, and the FR coats are kept for the specific procedures that require them. Our post on lab coats for research labs covers everyday coats for those teams.

MISHAREN makes lab coats as workwear and does not supply or claim flame-resistant coats; for FR garments, use a specialist PPE supplier that can provide certification. For everyday workwear coats with your logo and names, see the lab coats page or ask for a quotation through contact.