Pasteur Pipettes made of Low-density polyethylene (LDPE), are unbreakable, non-toxic all-in one pipettes. These pipettes eliminate the hazard of broken glass and exposure to infectious materials. Molded from translucent high-quality Polyethylene, these pipettes are inert to biological fluids and most acids. • Can be sealed and refrigerated • The low-affinity low binding surface reduces the loss of cells and valuable proteins • Sterile and non-sterile options available