Gain easy access to your suspension cultures with the four-port Nalgene™ Polycarbonate Culture Vessel. Economical, lightweight, and break-resistant, it is molded of transparent polycarbonate for easy viewing of your cultures. Graduated in 0.5L increments from 3 to 12L. For use with overhead drive mixers and lower assemblies for top to bottom mixing. Port accessories are available (ports accept any Nalgene 38-430 size closure). Noncytotoxic, autoclavable, and USP Class VI compliant.