Flat-Base Sterile Erlenmeyer Shaker Flask, 500 mL, PP, packs of 12, 48/CS

Safe and shatterproof alternative to glass|Made with virgin, optically clear, nonleaching polycarbonate (PC) Certified pyrogen-, DNase-, and RNase-free Dual-use cap included?for venting and nonventing applications Individually-wrapped with flat or baffled bottoms|12 flasks per tray, 4 trays per case, 48 flasks total|These clear flasks some presterilized, individually wrapped, and are ideal for storing or mixing cultures, microbes, samples, and media?any critical fluid. Baffled-bottom vessels help agitation in shaking applications. Both flat and baffle flasks fit into standard Erlenmeyer/Fernbach flask clamps for shaking incubators. The DuoCap? (included) acts as two caps in one. The seal is made of polypropylene with a 0.22 ?m PTFE membrane?ideal for sterile air exchange in cell cultures. If venting is not wanted, simply keep the dust cover in place for a leakproof closure?perfect for storage and mixing. Flasks and caps may be re-used, and re-sterilized by autoclave. Autoclavable