CHMLAB offers a wide range of Glass microfiber filters
made of 100% borosilicate glass fibers. The depth structure
of the filter with its large surface area provides an outstanding
impurity retention capacity combined with a low filter resistance.
Glass fiber filters adsorb the finest particles down to
1 µm from liquids and < 1 µm in air and gases
(even aerosols with this particle diameter are separated),
as the electrostatic interaction between the glass fibers
and gases is better than between glass fibers and liquids.
Temperature resistant up to 500ºC (with organic binders
up to 180ºC) GF1 GRADE – (1.6 µm) Particularly suited to atmospheric pollution controls,
intake controls and ozone level measurements. This product is used in testing for algae in water, in
general water controls and in waste water analysis. Its use for filtering solvents in high-resolution laboratories
is recommended. The Trace Element Levels were obtained with
an AAS (Atomic Absorption Spectrometer) with 100% dissolved
fiberglass. GF2 GRADE – (1.0 µm) It is mainly used in membrane pre-filtration. The Trace Element Levels were obtained with an AAS (Atomic
Absorption Spectrometer) with 100% dissolved fiberglass. GF3 GRADE – (1.2 µm) This is the most suitable filter for testing for solids
in suspension in water, in accordance with the parameters
set by the EN European regulations. In general is suitable
for any work in water control and drinking or waste water
analysis, including clarification processes. In biochemical tests, it is very useful for analysing
carbohydrates, cellular cultures, etc. The Trace Element Levels were obtained with an AAS (Atomic
Absorption Spectrometer) with 100% dissolved fiberglass. GF4 GRADE – (2.7 µm) The most widespread use of this is in membrane pre-filtering. Its high particle retention ensures that the sample is
properly clarified before passing through surface filters
(membrane filters). The Trace Element Levels were obtained with an AAS (Atomic
Absorption Spectrometer) with 100% dissolved fiberglass. GF5 GRADE – (0.7 µm) This is the filter with the highest retention performance
of the range.It is particularly suited for filtering samples
and solvents for HPLC, being this pre-filtration most important
for ensuring the success of the test. It is also suitable for biochemical test, such as clarifications,
protein filtrations, cellular cultures, etc. The Trace Element Levels were obtained with an AAS (Atomic
Absorption Spectrometer) with 100% dissolved fiberglass. GF6 GRADE – (1.5 µm) Suitable for atmospheric pollution control, particularly
in testing for air intake levels. It is also appropriate
for waste water control, testing for solids in suspension,
dissolved solids and volatile matter in accordance with
the parameters set by the American Standard Methods. It is also suitable for cellular cultures. The Trace Element Levels were obtained with an AAS (Atomic
Absorption Spectrometer) with 100% dissolved fiberglass.
