NALGENE® 127 Sterilization Filter Units – 1000mL Capacity, polystyrene housing, Cellulose Nitrate membrane

500mL upper with 1000mL receiver. Feature a leakproof 1-½ turn threaded screw closure. Membrane pore size and material are clearly marked on the GREEN collar. Each case includes 12 glass-fiber prefilters. We recommend the 1000mL size for filtering aqueous solution such as buffers. Depending on the particle load, throughput may not equal 1000mL. Separate transparent, sterile receivers are available. Sterile/Graduated.