Syringe-driven filter units are available in 0.22,
0.45 and 0.80 micron pore sizes with PP housings.
Membranes available include CN-CA (mixed cellulose
esters), Nylon, Polyvinylidene fluoride (PVDF) or
Polytetrafluoroethylene (PTFE). The 13 mm units are
recommended for filtering volum