Tychem^® 9400, a state-of-the-art fabric, provides excellent protection against a broad range of chemicals. The material is tough, durable and tear-resistant, and holds its own among many other reusable apparel fabrics that are considerably more costly. It is a copolymer film laminated to a rugged, spun-bonded material from DuPont. Suits of Tychem^® 9400 are tops for many applications from splash protection to basic clean-up tasks.

Tychem^® 9400 Level B garments offer excellent splash protection against a wide line-up of chemicals. The garments are designed in several standard styles, a fact that makes this high-visibility yellow wear a very popular choice in the chemical industry. All models are constructed with set-in sleeves for added strength, freedom of movement and wearer comfort. Tychem^® 9400 garments are durable, tear resistant and economical to use. Garments meet all fabric requirements of NFPA 1993.

Tychem® 9400 Permeation Data for ASTM Recommended List of Chemicals for Evaluating Protective Clothing Materials (ASTM F1001)
Chemical Name	Physical Phase	Normalized Breakthrough Time (minutes)	Permeation Rate (pg/cm2/min)
Acetone	L	>480	ND
Acetonitrile	L	>480	ND
Ammonia (anhydrous)	G	45	0.69
1,3-Butadiene	G	>480	ND
Carbon Disulfide	L	>480	ND
Chlorine Gas	G	>480	ND
Dichloromethane	L	391	0.09
Diethylamine	L	>480	ND
N,N-Dimethylformamide	L	>480	ND
Ethyl Acetate	L	>480	ND
Ethylene Oxide	G	>480	ND
n-Hexane	L	>480	ND
Hydrogen Chloride	G	>480	ND
Methanol	L	150	0.91
Methyl Chloride	G	>480	ND
Nitrobenzene	L	>480	ND
Sodium Hydroxide, 50%	L	>480	ND
Sulfuric Acid (conc.)	L	>480	ND
Tetrachloroethylene	L	>480	ND
Tetrahydrofuran	L	>480	ND
Toluene	L	>480	ND
Index of Codes: ND = none detected, > = greater than, < = less than, L = Liquid, G = Gas
Numbers reported are averages of samples tested by the ASTM F739 test method. Sample results do vary and therefore averages for these results are reported