50pcs Lab Filter Nylon Membrane Filter 25/47/50/60/90mm 0.22/0.45μm
They provide dependable performance for a wide range of lab procedures. General laboratory filtration.
200Pcs PVDF Hydrophilic Membrane Filter 0.45um 50mm
Material: Hydrophilic PVDF. Surface: White / Flat. Effective for E. coli recovery and retention. Suitable for sterilization and clarification applications. Low extractables for cleaner, more consistent test results.