Clamping closures gently lock over dialysis tubing, providing a leakproof seal without knots. Can be used with cellulose ester, regenerated cellulose, and PVDF dialysis membranes. Made entirely of Nylon 66, closures have an operating temperature range of 0-90C, and can be sterilized with ethylene oxide, gamma-irradiation, ethanol, or formalin.Different colors can be used to code samples. For best results, select a closure 4-10 mm wider than the flat width of the dialysis tubing.