POLY36 .2/.2 PES 1/PK F/A/S/WB Polycap™ TC (PES) 36, 0.2/0.2 µm, sterile with MNPT inlet and SB outlet plus filling bell, 1/pk are disposable, dual layer polyethersulfone (PES) membrane filtration capsules that provide efficient filtration for critical aqueous solutions.