The Polycarbonate filtration system is composed with a top part of 250 ml which allows to make vacuum and optionally with a receiver flask of 250 ml. It is all together a practical system for the filtration, in and outside the laboratory. It is generally used for the clarification or sterile filtration of up to about 200 ml volumes of aqueous solutions. Type FS047250P is complete with top part and receiver flask, and type FS047250W does not include the 250 ml receiver flask. Suitable for membrane filter diameter 47 mm (prefilter 37 mm)