Sartorius® PE fabric,88mm,50pcs, polyethersulfone (PES) prefilter

Glass fiber filters are placed centrally on the membrane filter in the filtration device. They are depth filters, so they are most effective at low pressure. Their diameter must not be larger than the inner diameter of the O-ring in the top of the unit, otherwise they would cause lateral leaks. Type 13400 is the standard pre-filter, but for very dirty solutions, Type 13430 can provide even better membrane filter relief. Both contain binders. Type 13440 is binder-free.