Sterile depth filters for storage tanks The P-BE filters of Van Borselen ensure 100% sterility when storing pharmaceutical products, chemicals or food. The P-BE is a depth filter with inner and outer protective covers made of stainless steel. Consisting of a three-dimensional borosilicate glass fiber medium, the P-BE achieves a pore volume of 95%, which means high containment at high flow rates and a low pressure differential. During use, a retention rate of> 99.999%, based on 0.01 µm, is achieved. All components meet FDA stated requirements for food contact in accordance with CFR Title 21 requirements.