Mixed Cellulose Ester (MCE) membrane filters. Biologically inert mixtures of cellulose acetate and cellulose nitrate result in membranes with a smoother and more uniform surface than pure nitrocellulose. Easy to handle, less cracking and fracturing than traditional CN membranes. Pure surface with no additional smoothing treatment or surfactants. Accurate pore structure and highly regulated density for accuracy, Medium-fast flow rates with reproducible loading capacities, clean-edge processing ensures easy separation from stack and less curl. Autoclavable. Ideal for clarification or sterilization of aqueous solutions, microbiological growth and colony counting methods, cytology, yeast and mold virus concentration, HPLC sample preparation of aqueous solutions, OSHA particle analysis and food and beverage microbiological QA/QC.