Economic Choice Syringe Filters are available in a variety of sizes and membrane types to meet any application need. Choice Regnerated Cellulose Syringe Filters 0.2 µm, 25 mm, 100 Pk. Choice Regnerated Cellulose Syringe Filters 0.45 µm, 25 mm, 100 Pk. Choice Regnerated Cellulose Syringe Filters 0.2 µm, 13 mm, 100 Pk.