Filters and Cassettes Selection Guide

Material Common Pore Sizes Main Properties Applications
Mixed Cellulose Ester (MCE) Membranes 0.45 μm
0.8 μm
1.2 μm
5.0 μm
  • Hydrophilic
  • Ready Soluble for atomic absorption analysis
  • Readily rendered transparent for light transmitted microscopy
  • Dissolve and clear easily
  • Metal Dust Analysis
  • Asbestos
  • Man-made fibres
GLA 5000 PVC Membrane Filters
Polyvinyl Chloride (Pure Homopolymer)
0.2 μm
0.5 μm
0.8 μm
2.0 μm
5.0 μm
  • Hydrophilic
  • Non-oxidising surface
  • Silica free
  • Low tare weight for gravimetric analysis
  • Low ash
  • Gravimetric analysis
  • Hexavalent chromium
PTFE (Polytetrafluoroethylene) Membrane Filters 0.5 μm
1.0 μm
2.0 μm
5.0 μm
  • Hydrophilic
  • Inert to solvents, acids and bases
  • Autoclavable
  • Alkaline dusts
  • Polynuclear aromatics
  • Isocyanates
  • Pesticides
Polycarbonate Membrane Filters 0.4 μm
0.8 μm
  • Microscopically smooth surface
  • Extremely thin (10-20 μm) and transparent
  • Autoclavable
  • Scanning electron microscopy
  • Asbestos fibres
Silver Membrane Filters 0.45 μm
0.8 μm
  • Wide solvent compatibility
  • Higher temperature tolerance
  • Autoclavable
  • Uniform porosity and thickness
  • Bromine
  • Asbestos by TEM
  • Silica by x-ray diffraction
Glass Fibre Depth Filters Liquid
Nominal
Rating 1 μm
  • Partially hydrophobic
  • Higher temperature tolerance
  • High particulate retention
  • Pesticides
  • Coarse gravimetric
  • Isocyanates
  • Ethylene glycol
Quartz Depth Filters Liquid
Nominal
Rating 1.2 μm
  • Same as glass fibre
  • Low level metals content
  • Autoclavable
  • Gases
  • Aerosols
  • PM10
  • Diesel particulates
Cellulose Depth Filters Nominal
  • Autoclavable
  • Uniform Strength
  • Ashless (Type 40)
  • AA
  • HPLC
Gelatin Filters Nominal
  • Maintain viability of microorganisms
  • Microorganisms
DPM Cassettes Nominal
  • Tamper evident seal
  • Single use
  • Diesel Particulates
BestChek Asbestos Cassettes 0.45 μm
0.8 μm
1.2 μm
  • Preloaded including cellulose supports
  • With cowl
  • Banded
  • Asbestos
Coated (Treated) Filters Various
  • Ready to use
  • Isocyanates
  • Gases and vapours