DROPETTE® Disposable Transfer Pipets Made of low density polyethylene. These all-in-one pipets eliminate the hazard of broken glass and exposure to infectious materials. Put an end to matching rubber bulbs with glass pipets. Molded from see-through low density polyethylene. 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. They work well whenever there is a need for quick, safe transfer of fluids. Temperature resistant down to -196 °C.