Our unique PVDF syringe filter design increases the effective filtration area by 31% over the leading brands of 25mm syringe filters. All our syringe filters are housed in inert polypropylene and are ultrasonically welded for a positive, particle-free seal. Housings have standard, slip luer fittings on the exit port and full-thread luer-lock fittings on the entry port. Pre-filters greatly increase the capacity of syringe filters and decrease backpressure during filtration.