Unbreakable, all-in-one pipets eliminate the hazard of broken glass and exposure to infectious materials. Put an end to matching rubber bulbs and glass pipets. Pipets are molded from transparent, low density polyethylene and are inert to biological fluids and most acids. The low-affinity surface reduces the loss of cells and valuable proteins due to binding. Can be sealed and refrigerated. Temperature resistant from -196° to +90°C. Can be used in liquid nitrogen.