-Available Pore Sizes include 0.20μm, 0.45μm, 0.65μm, 0.80μm, 1.0μm, 3.0μm -Colors include White, Black, and Green Membranes -Surfaces include Gridded or Plain, and with or without Hydrophobic Edge (HE) -Individually Wrapped or Multipack, and with or without Absorbent Pad Mixed Cellulose Esters (MCE) membrane is a general purpose filter used in many applications for the microbiological examination of water, wastewater, pharmaceuticals, food, and beverages and air monitoring. MCE membranes offer high recovery rates and superior flow rates. Contrasting grid lines facilitate counting colonies and are tested to assure freedom from grid line inhibition. 3.1mm squares represent 1/100 of the filtration area of a 47mm diameter filter (9.6cm2). Membranes are sterilized by ethylene oxide (EtO) gas and are available individually wrapped or 10-pack in envelopes. Membrane specifications and lot number are printed on clear cover of each filter. Advantec continuous pleated band packaging is compatible with various membrane dispensers. Advantec membranes were developed and are manufactured to comply with the ASTM and the Standard Methods for the Examination of Water and Wastewater. Quality control tests are performed on each lot and QA Certificates are available.