... 5. Durable material: The main fitting (the filter, the filter fastener, valve, fixture, filter cloth et al) is made of 316L ... , 2L, 3L, 4LWith preventing Overflow Tool, liquid lever display4. Membrane Filter for microbiological analysisΦ47×0.22μm×200pieces/box, Individual ... Pack, sterilized5. Membrane Filter for Microorganism analysisΦ47×0.22μm×200pieces/box, ...