Perform Respirator Fit Testing, Pulmonary Function Testing, breathalyzer, Saliva Testing, Urine Dipstick Testing, Urine Drug Screening in line with DOT regulations, Vision Screening, Audiometric Testing, Safe Venipuncture, and Injections. SNF is a specialty chemical group whose products, water-soluble polymers, contribute to treating, recycling, preserving water, saving energy, and reducing carbon footprint.