GLOSSARY
Flame Resistant:
The characteristic of a fabric to resist ignition and to self extinguish if ignited.
Flame Retardant:
A chemical substance used to impart flame resistance.
Primary Protective Clothing:
Clothing designed for activities where significant exposure to molten substance splash, radiant heat, or flame is likely to occur. The following products are considered Primary Protective Clothing: Hot Metal Gloves, Hard Hat Shields, Hard Hats, Snoods, Aluminized Jackets, Aluminized Center Coats, Aluminized Chaps, Aluminized Spats & Leggings, Weather Spats & Leggings.
Secondary Protective Clothing:
Clothing designed for continuous wear in areas where intermittent exposures to molten substance splash, radiant heat, and/or flame is possible. Flame Retardant (FR) work apparel, since it is designed for continuous wear, is considered to be secondary protection. The following products are considered Secondary Protective Clothing: Shirts, Pants, Coveralls, Lab Coats, Jackets.
Chemical Resistance:
Chemical resistance, at the time of this writing, relates only to the ability of fabrics to withstand exposure to various chemicals without affecting their physical properties or flame resistance.
Reusable Protective Clothing:
Garments which are capable of withstanding a maintenance procedure to remove soil and other contaminants, yet retain the garment's protective characteristic.
Stoll Curve:
A plot of thermal energy and time predicted to cause pain sensation, or a second degree burn, in human tissue.
Afterflame:
The number of seconds there is a visible flame in the fabric.
Afterglow:
The number of seconds there is a visible glow on the fabric.
Char Length:
The length of fabric destroyed by the flame.
Inherently Flame Resistant Fibers / Fabrics:
Flame resistance is an essential characteristic of the fiber from which textiles are made.
Treated Fibers / Fabrics:
Have an applied chemical treatment to change the original level of a specific property or properties, in this instance flame resistane.
