• Syringe filter selection guide • Membrane selection chart • How to select your sample preparation device Syringe filters 41 20-25 54 12 0.007 0.22 85 N 1.5 0.22 69 10 42 2.5 1870 240 0.007 0.20 100 N 2.8 0.40 172 25 43 16 155 40 0 44 3 995 175 0.007 ...