West Chester 29101. 4 mil industrial grade powder free blue nitrile gloves. PosiShield powder free industrial grade nitrile, blue, 100/box. Made from component materials that comply with Federal. Regulations for Food Contact: 21CFR, 170-199. Ambidextrous design fits right or left hand, loose fit around wrist for comfort, rolled cuff prevents tearing when pulling off and on. Automotive, plumbing, assembly, manufacturing. transportation security and law enforcement. TEST STANDARDS 21 CFR 170-199 for food contact, Tensile Strength: 14MPA, Elongation before aging: 500%.