UD TECHNOLOGY
General guidelines for membrane characteristics
&
compatible applications
NYLON
Membrane Characteristics
Most frequently selected membrane; broad compatibility with aqueous and organic samples; naturally hydrophilic membrane; extremely low in extractable with strong acids or bases.
Applications
General laboratory filtration; filtration for most HPLC samples.NOTE: Nylon binds proteins, do not use when high protein recovery is desired.
PTFE
Membrane Characteristics
Hydrophobic membrane is resistant to nearly all solvents, acids and bases; membrane is mechanically liquids; low in extractable; PTFE block water vapour; can be used to filter aqueous solutions after rewetting with a alcohol.
Applications
Hydrophobic membrane is resistant to nearly all solvents, acids and bases; membrane is mechanically liquids; low in extractable; PTFE block water vapour; can be used to filter aqueous solutions after rewetting with a alcohol.
PES
Membrane Characteristics
High flow rates with good throughput volume, low protein binding, compatible with high temperature liquids, mechanically strong membrane low in inorganic extractable.
Applications
PES (Polythersulfone) is certified for ion Chromatography; Tissue Culture filtration; filtration of protein and nucleic acids.
Cellulose Acetate
Membrane Characteristics
Low protein binding, ideal for aqueous-based sample; high protein recovery from filtration; lower protein binding compared to PVDF
Applications
Tissue Culture media filtration, sensitive biological samples.
Glass Fiber
Membrane Characteristics
Larger porosity, able to remove large particulates without clogging
Applications
Dissolution testing, general filtration.
PVDF
Membrane Characteristics
Hydrophilic membrane with good solvent resistance; low UV absorbing extractable and low nonspecific binding.
Applications
General biological filtration; filtration of samples where high protein recovery is desired.
MCE
Membrane Characteristics
Biologically inert, a smoother and more uniform surface than pure nitrocellulose filter.
Applications
One of the most widely used membranes in a bacteria detection.