Silicone tubing will normally give the highest dispensing accuracy. Pharmed tubing will be the best choice where silicone is not chemically compatible. or long tube life is required. Silicone tubing should be selected where USP Class VI certification is required. BEGIN BY SELECTING THE RIGHT TUBING SILICONE Most commonly used for dispensing applications silicone tubing meets USP and NFS Class VI standards. Translucent, Food and medical quality. Autoclavable. NEOPRENE Until the introduction of Pharmed, the standard industrial tubing and generally best for abrasive slurries and for pumping against sustained pressure. Black, Food quality. PHARMED Saint Gobain's exclusive thermoplastic elastomer which has superseded Neoprene, Butyl and silicone in many applications. Greatly enhanced tube life. Pharmed meets USDA standards for food handling and complies with FDA 21 CFR 177.260. Excellent chemical compatibility. Beige, Autoclavable. VITON Flowtech Viton has greatly extended life (five to twenty-five times longer than previously available). Viton is expensive, but sometimes the only chemically suitable material. Black. Not food quality