(MCE) Mixed Cellulose Ester membrane filters are composed of cellulose acetate and cellulose nitrate. Because MCE membrane is biologically inert, it’s widely used in analytical and research applications. MCE membrane filter is characterized by smoother and more uniform surface than pure nitrocellulose filter. Also, the color contrast provided by the filter surface facilitates particle detection and minimizes eye fatigue.
Many microbiological techniques include colony counting after incubation as the standard method of quantification. Gridded filters have clearly defined grid lines spaced at 3.1 mm intervals. The special ink used is nontoxic and completely free from bacterial growth inhibitors. White gridded disks are designed for the recovery and retention of E. Coli bacteria in water/waste-water analysis as well as other microbiological tests. Black mixed cellulose esters(MCE) are available plain for automatic colony counting applications, as well as gridded to assist in manual counting procedures. Black MCE membranes provide contrast between residue or cell colors and the filter without having to counter-stain the membrane.
Membrane solutions LLC also supplies sterile gridded membrane filters with or without pads.

Parameters
Material/Support	MCE (Mixed Cellulose Ester)
Normal Size	13mm
Pore (μm)	0.45
Color	White
Bubble Point (Bar)	2.23
Water Flow Rate (ml/min/cm2)	60
Air Flow Rate (L/min/cm2)	5
Porosity	79