Cellulose Acetate CA Syringe Filters, 0.22 um, 25mm, Luer-Lok/Luer Slip, Sterile, 100 per pack, SF14493. Regular Price: $127.33. Price $110.73. Add To Cart. Cellulose Acetate CA Syringe Filters, 0.22 um, 33mm, Luer-Lok/Luer Slip, Sterile, 100 per pack, SF14495. Regular Price: $175.95.