Ensures visibility of particles under the microscope with smooth membranes and low affinity for stains. Whatman™ Cyclopore™ Polycarbonate Membrane Filters can also reproduce microfiltration characteristics of track-etched membrane filters.

Mixed cellulose ester membranes, well suited for microbiological analysis of water, wastewater, pharmaceuticals, or beverages. Advantec MFS™ Cellulose Ester Membrane Filters feature a gridded surface for colony counting.

Use for analyses of airborne contaminants and other particles using optical or electron microscopy. Isopore™ Polycarbonate Membrane Filters have a smooth, glass-like surface for clearer sample observation. Available in a variety of pore sizes/flow rates, diameters and colors.

Recommended for particle-removing filtration of water, aqueous solutions and solvents for analytical determination. Sartorius™ Polyamide (Nylon) Membrane Filters are white, non-sterile filters without grids. Choose from two pore sizes in four diameters. Bulk packed for space and cost savings.

Universal filter made from pure polyamide for clarification and sterile filtration

Hydrophobic membrane with laminated backing for easier handling

Filter air and gasses, even at low differential pressures. Sartorius™ PTFE (Polytetrafluorethylene) Membrane Filters are permanently hydrophobic with low adsorption and excellent chemical compatibility. Choose from four pore sizes in a variety of diameters.

Whatman™ Mixed Cellulose Ester Membrane Filters are biologically inert and offers high degree of internal surface area for greater product adsorption.

Ensure quality control in microbiological filtering. Sartorius™ Gridded Sterile Cellulose Nitrate Membrane Filters, 0.45μm are single-packed membranes with colored grids for colony counting, particle testing and microscopy. The 0.45μm pore size is made in accordance with ISO 7704. Choose from two diameters and quantities in a range of filter/grid color combinations.

Polyethersulfone (PES) filters have a high internal porosity.

Provides clarification of corrosives, solvents, and aggressive fluids. Whatman™ PTFE Membrane Circles are particularly useful in HPLC analysis when solid particles can cause permanent damage to the column.

Fisherbrand™ Polyethersulfone Membranes features highly asymmetrical pore structure that offers effective loading capacity and high flow rate.

Suitable for Clarification and sterilizing filtration of biological fluids . Fisherbrand™ Cellulose Membranes filters are composed of pure cellulose acetate modified to offer researchers the lowest binding filters available.

Naturally hydrophilic membrane designed to wet out evenly and retain its superior strength during use in general filtration or medical assays.

Fisherbrand™ Mixed Celluloses Esters Membranes Non-sterile Filters are composed of cellulose acetate and cellulose nitrate.

Fisherbrand™ PTFE membrane is hydrophobic filter made of polytetra-fluorethylene laminated with PP layer.

Carry out particualte and microbial analysis with these filter membranes. Available in various forms for water quality work, cold sterilization or sample clean up.

Increase filtration speed and throughput of highly viscous or heavily particulated solutions when using theses prefilters with Nalgene MF75 filter units or bottle top filters.

Fisherbrand™ Mixed Celluloses Esters Membranes Sterile Filters are composed of cellulose acetate and cellulose nitrate.

Ideal for filtering or sterilizing nonprotein-containing biological solutions.

Clear sodium chloride disc used in an infrared spectrophotometer

Recommended when maximum recovery is important