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chromatography & spectroscopy
271
MEMBRANE FILTERS
Membrane filtration offer a very convenient, fast and
economical separation method.
They offer below mentioned advantages;
Excellent level of particle retention
Large load carry capacity
High permeability to air
Non-hygroscopic and biologically inert
Chemical resistance to most solvents and reagents.
Very high temperature resistance
Available 2 filters: filters with 0,45 µm pore size
filters with 0,20 µm pore size
CM: cellulose mixed ester membrane
Particularly suitable for aqueous
solutions. They are hydrophilic.
Thermally stable to 121°C. Ideal for
gravimetric analysis and are often used
for contamination tests.
TE: polytetrafluoroethylene membranes
Particularly suitable with aggressive
media, as well as to concentrated acids
and bases. They are hydrophobic, they
can be used up to 145°C.
RC: regeneratedcellulosemembranes
These membranes are resistant to most
organic solvents. They are mostly used
for filtration of solvent mixtures and ultra-
purification and degassing of HPLC
eluents.
CA: cellulose acetate membranes
They have a low protein binding capacity
and they are suited for aqueous and
alcoholic media. They are hydrophobic
and can be used for hot gases up to
180°C.
NC: nitrocellulose membranes
They are easily wettable and suited
for filtration of aqueous solutions. In
dry atmosphere these membranes are
thermally stable at 125°C and can be
autoclaved at 121°C.
PE: polyester membranes
They are hydrophilic. Particularly
suitable for fine titration, dust analysis,
aerosol analysis and ultra-purification of
solvents.
pore
size
0,20 µm
0,45 µm
0,20 µm
0,45 µm
0,20 µm
0,45 µm
0,20 µm
0,45 µm
0,20 µm
0,45 µm
0,20 µm
0,45 µm
code
name
CM
CM
NC
NC
RC
RC
TE
TE
PE
PE
CA
CA
diameter
47 mm
47 mm
47 mm
47 mm
47 mm
47 mm
47 mm
47 mm
47 mm
47 mm
47 mm
47 mm
pack
quantity
100 pieces
100 pieces
100 pieces
100 pieces
100 pieces
100 pieces
100 pieces
100 pieces
100 pieces
100 pieces
100 pieces
100 pieces
104.01.001
104.01.002
104.01.003
104.01.004
104.01.005
104.01.006
104.01.007
104.01.008
104.01.009
104.01.010
104.01.011
104.01.012
catalogue
number
cellulose mixed ester
cellulose mixed ester
nitrocellulose
nitrocellulose
regenerated cellulose
regenerated cellulose
polytetrafluoroethylene
polytetrafluoroethylene
polyester
polyester
cellulose acetate
cellulose acetate
membrane
material