PES Bottle-Top Filter Units (75mm membrane diameter, 0.2um pore size, 45mm neck) 500mL , case/12 (Nalgene)

Steritop-GP PES Filter Units, 500mL, 0.22um pore size, 33mm neck, radio-sterilized, 12/pk [TOPS ONLY] (Millipore)

Steritop™ Quick Release Bottle Top Filtration System, 45 mm threaded bottle top filter with 0.22ěm pore size fast flow PES Express PLUS membrane, 500mL, 12/pk (TOPS ONLY) (Millipore)

PES Bottle-Top Filter Units (75mm membrane diameter, 0.2um pore size, 33mm neck) 500mL , case/12 (Nalgene)

Nalgene® Rapid-Flow™ Bottle-Top Vacuum Filters, Surfactant-Free Cellulose Acetate, Sterile, (75mm membrane diameter), 500mL (0.2um pore size), case/12 (Nalge Nunc)

Filtropur BT50 Bottle Top Filter, 500ml, 0.2um, 24/cs (Formerly 83.3941.101) (Sarstedt)

Filtropur BT25 Bottle Top Filter, 250ml, 0.2um, 24/cs (Sarstedt)

500 mL Bottle Top Vacuum Filter (TOP ONLY), 0.22 µm, PES, Sterile, 24/cs (Nest)

1000 mL Bottle Top Vacuum Filter (TOP ONLY), 0.22 µm, PES, Sterile, 24/cs (Nest)

150mL Bottle Top Vacuum Filter (TOP ONLY), 0.22 µm, PES, Sterile, 24/cs (Nest)