Membrane choices include: Regenerated Cellulose (RC), Polyethersulfone (PES), Surfactant-free Cellulose Acetate (SFCA), Nylon (NY), and “PTFE” Fluourocarbon Resin. Excellent chemical resistance, low protein binding, and the best DMSO copatibility. Syringes filter with high burst strength for assured performance. Manufactured to ISO 9002 and GMP standard and 100% integrity tested. These disposable filter units are ideal for tissue culture media, buffer solution, stain solution, biological fluids and most other aqueous solutions and reagents that are used daily in the EM lab. Pore size and membrane type are printed on every syringe and the filters are certified non-cytotoxic and non-pyrogenic. Sterile syringe filters are individually blister-wrapped in cases of 50. Non sterile syringe filters are packaged in cases of 50. Polypropylene housing.