A wide variety of tubing choices for fitting a range of different pumps. Tubing is available in different thicknesses and material formats. This silicone tubing is certified for maximum biocompatibility when using perfusion pumps. VWR offers a broad range of products, each engineered to meet specific needs—needs such as chemical resistance, controlled flow rates, biocompatibility, barrier to permeation, abrasion resistance, temperature, pressure, and visual access. Consistent quality, durability, and performance under pressure.