Cellulose Acetate Syringe Filters, Sterile, Abluo, 0.22 Micron, 25mm, 50/pk. For maximum sample recovery, choose Sterlitech’s sterile cellulose acetate syringe filters. Low-binding and hydrophilic, these sterile cellulose acetate syringe filters are available with or without a glass fiber pre-filter and boast both strength and a uniform pore size throughout their cellulose acetate membrane.