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MN Filter membranes

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Membranes enable a very convenient, fast and economical separation. 
Often they are also used as a neutral sample support for further analysis.


Characterization:

Material Properties and pore sizes Type
Cellulose mixed esters

– suitable for aqueous solutions
– also available sterile and/or
with grid
– recommended for gravimetric
analysis
– autoclaving possible at 121 °C
– economical
– pore sizes 0.2 – 0.45 µm

PORAFIL® CM
Cellulose mixed esters,
fabric-reinforced
– suitable for aqueous solutions
– higher mechanical stability than
PORAFIL® CM
– pore sizes 0.2 – 0.45 – 0.8
PORAFIL® MV
Cellulose nitrate – thermally stable up to 125 °C
– autoclaving possible at 121 °C
– pore sizes 0.2 – 0.45 µm
PORAFIL® NC
Polycarbonate

– very low halogen blank values
– suitable for quantitative AOX
determination
– thermally stable up to 140 °C
– pore sizes 0.4 µm

PORAFIL® PC
Cellulose acetate – suitable for aqueous and many
alcoholic media
– low protein binding capacity
– thermally stable up to 180 °C
– pore sizes 0.2 – 0.45 – 0.8 –
1.2 µm
PORAFIL® CA
Polytetrafluoroethylen (PTFE) – hydrophobic membrane
– suitable for almost all solvents,
chemical resistance towards
acids and bases
– for filtration of aggressive
media
– thermally stable up to 145 °C
– pore sizes 0.2 – 0.45 – 1.0 –
3.0 µm
PORAFIL® TE
Polyester – chemically very resistant
membrane ( not as stable as
PFTE)
– suitable for TOC/DOC
determination
– thermally stable up to 150 °C
– pore sizes 0.2 – 0.4 – 1.0 –
5.0 µm
PORAFIL® PE
Regenerated cellulose – suitable for all media except
strong acids and bases
– thermally stable up to 180 °C
– pore sizes 0.2 – 0.45 µm
PORAFIL® RC

 


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