These 1000 mL bottle top filters from Jet Biofil feature a 0.22 micron polyethersulfone (PES) filter membrane. The filters are sterile and individually packaged. The filters can withstand a maximum of 13 psi pressure when using a vacuum pump. They are ideal for use with the Jet Biofil 1000 mL bottle but are compatible with any reservoir with a 45mm neck size. This product is also offered in a 12 pack and 24 pack.
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Seems perfect, but yet to use it.
These filters work great! They also allow me to capture the sludge which in some cases is reusable.