OmniTrust Nitrile Powder-Free CF Exam Gloves MEDIUM (212-22). OmniTrust Nitrile Powder-Free CF (comfort formulation) exam gloves are your best choice for high risk applications. Certified safe for use with chemo-therapy drugs. Featuring the strength and chemical resistance of nitrile, excellent donning characteristics, and textured fingers for enhanced grip control. Flat packed for optimum dispensing. 100/BX 10BX/CS. Priced per box.