Glass-fibre filters

The glass fibre filters from LABSOLUTE® are made of borosilicate glass without binder and are thus biologically inert. The filters provide a high retention power and simultaneously enable elevated flow rates, which makes them applicable for almost every area of laboratory filtration. Among other things, they are used for clarification of protein solutions, air or water monitoring and for gravimetric and waste water analyses. Furthermore, they can be ideally used as prefilters for membranes.

• Very high resistance to almost all kinds of chemicals
• Temperature-resistant up to 500 °C
• Autoclavable up to 134 °C

- Particle retention: 1.6 µm

• Thickness: 0.26 mm
• Weight: 52 g/m²

Accessories Buchner funnels, porcelain Alternative Micro glass fibre filters, slow filtering Alternative Micro glass fibre filters, medium fast filtering

The glass fibre filters from LABSOLUTE® are made of borosilicate glass without binder and are thus biologically inert. The filters provide a high retention power and simultaneously enable elevated flow rates, which makes them applicable for almost every area of laboratory filtration. Among other things, they are used for clarification of protein solutions, air or water monitoring and for gravimetric and waste water analyses. Furthermore, they can be ideally used as prefilters for membranes.

• Very high resistance to almost all kinds of chemicals
• Temperature-resistant up to 500 °C
• Autoclavable up to 134 °C

- Particle retention: 1.2 µm

• Thickness: 0.26 mm
• Weight: 53 g/m²

Accessories Buchner funnels, porcelain Alternative Micro glass fibre filters, slow filtering Alternative Micro glass fibre filters, fast filtering

The glass fibre filters from LABSOLUTE® are made of borosilicate glass without binder and are thus biologically inert. The filters provide a high retention power and simultaneously enable elevated flow rates, which makes them applicable for almost every area of laboratory filtration. Among other things, they are used for clarification of protein solutions, air or water monitoring and for gravimetric and waste water analyses. Furthermore, they can be ideally used as prefilters for membranes.

• Very high resistance to almost all kinds of chemicals
• Temperature-resistant up to 500 °C
• Autoclavable up to 134 °C

- Particle retention: 0.7 µm

• Thickness: 0.45 mm
• Weight: 75 g/m²

Accessories Buchner funnels, porcelain Alternative Micro glass fibre filters, medium fast filtering Alternative Micro glass fibre filters, fast filtering

Glass microfibre filters have a fast filtration and a high loading capacity and particle retention rate. Manufactured without chemical binder from high grade borosilicate glass. (Exception: GF6, GF9). They are suitable for gravity or low suction filtration. Filtration speeds generally very much higher than conventional cellulose papers. Efficient retention of micron size particles. Must be used flat. Ideal for use in flat perforated plate Buchner type funnels (not sintered glass models). Can be used up to 500°C
Wide range of applications including:

• retention of fine analytical precipitates
• retention of biochemical gelatinous precipitates
• water/air pollution analyses
• as prefilters for membranes
• scintillation counting
• radioimmunoassay.

Glass microfibre filters have a fast filtration and a high loading capacity and particle retention rate. Manufactured without chemical binder from high grade borosilicate glass. (Exception: GF6, GF9). They are suitable for gravity or low suction filtration. Filtration speeds generally very much higher than conventional cellulose papers. Efficient retention of micron size particles. Must be used flat. Ideal for use in flat perforated plate Buchner type funnels (not sintered glass models). Can be used up to 500°C
Wide range of applications including:

• retention of fine analytical precipitates
• retention of biochemical gelatinous precipitates
• water/air pollution analyses
• as prefilters for membranes
• scintillation counting
• radioimmunoassay.

Extremely efficient filter made to retain fine particles and micro organisms. Particle retention to 1.2 µm.

Glass microfibre filters have a fast filtration and a high loading capacity and particle retention rate. Manufactured without chemical binder from high grade borosilicate glass. (Exception: GF6, GF9). They are suitable for gravity or low suction filtration. Filtration speeds generally very much higher than conventional cellulose papers. Efficient retention of micron size particles. Must be used flat. Ideal for use in flat perforated plate Buchner type funnels (not sintered glass models). Can be used up to 500°C
Wide range of applications including:

• retention of fine analytical precipitates
• retention of biochemical gelatinous precipitates
• water/air pollution analyses
• as prefilters for membranes
• scintillation counting
• radioimmunoassay.

Thick filter made from less fibres and retaining around 3µm particles with a very high loading capacity. Extremely high speed. Particle retention to 2.7µm.

Glass microfibre filters have a fast filtration and a high loading capacity and particle retention rate. Manufactured without chemical binder from high grade borosilicate glass. (Exception: GF6, GF9). They are suitable for gravity or low suction filtration. Filtration speeds generally very much higher than conventional cellulose papers. Efficient retention of micron size particles. Must be used flat. Ideal for use in flat perforated plate Buchner type funnels (not sintered glass models). Can be used up to 500°C
Wide range of applications including:

• retention of fine analytical precipitates
• retention of biochemical gelatinous precipitates
• water/air pollution analyses
• as prefilters for membranes
• scintillation counting
• radioimmunoassay.

The general purpose high efficiency glass microfibre filter. Particle retention to 1.6 µm. Supplied in pack quantities as indicated.

Suitable for analytical and gravimetric analyses, as well as a pre-filter.

• Hydrophilic
• Liquid Filtration
• Non-sterile

Glass microfibre filters have a fast filtration and a high loading capacity and particle retention rate. Manufactured without chemical binder from high grade borosilicate glass. (Exception: GF6, GF9). They are suitable for gravity or low suction filtration. Filtration speeds generally very much higher than conventional cellulose papers. Efficient retention of micron size particles. Must be used flat. Ideal for use in flat perforated plate Buchner type funnels (not sintered glass models). Can be used up to 500°C
Wide range of applications including:

• retention of fine analytical precipitates
• retention of biochemical gelatinous precipitates
• water/air pollution analyses
• as prefilters for membranes
• scintillation counting
• radioimmunoassay.

This ultra-fine filter has a 98% retention efficiency for particles as small as 0.7µm in liquids. Particle retention to 0.7µm.

Glass microfibre filters have a fast filtration and a high loading capacity and particle retention rate. Manufactured without chemical binder from high grade borosilicate glass. (Exception: GF6, GF9). They are suitable for gravity or low suction filtration. Filtration speeds generally very much higher than conventional cellulose papers. Efficient retention of micron size particles. Must be used flat. Ideal for use in flat perforated plate Buchner type funnels (not sintered glass models). Can be used up to 500°C
Wide range of applications including:

• retention of fine analytical precipitates
• retention of biochemical gelatinous precipitates
• water/air pollution analyses
• as prefilters for membranes
• scintillation counting
• radioimmunoassay.

Circles. High retention at high flow rates. Widely used in water pollution monitoring techniques for suspended solids, and is specified in US Method 934-AH. Particle retention to 1.5µm.

Alternative Fibre Filters with inorganic binder

Can be used up to a maximum of 200 °C. With organic binder.

Specifications
Thickness:	0.4 mm
Weight:	90 g/m2
Filtration time:	15 Sec.
Particle retention:	0.5 µm

Alternative Fibre Filters with inorganic binder

Glass microfibre filters have a fast filtration and a high loading capacity and particle retention rate. Manufactured without chemical binder from high grade borosilicate glass. (Exception: GF6, GF9). They are suitable for gravity or low suction filtration. Filtration speeds generally very much higher than conventional cellulose papers. Efficient retention of micron size particles. Must be used flat. Ideal for use in flat perforated plate Buchner type funnels (not sintered glass models). Can be used up to 500°C
Wide range of applications including:

• retention of fine analytical precipitates
• retention of biochemical gelatinous precipitates
• water/air pollution analyses
• as prefilters for membranes
• scintillation counting
• radioimmunoassay.

Manufactured from quartz microfibre to withstand high temperatures. Can be used up to 500°C.

Flow rate: Retention: Wet strength: Thickness:

Fast Medium High 0.475mm

Glass microfibre filters have a fast filtration and a high loading capacity and particle retention rate. Manufactured without chemical binder from high grade borosilicate glass. (Exception: GF6, GF9). They are suitable for gravity or low suction filtration. Filtration speeds generally very much higher than conventional cellulose papers. Efficient retention of micron size particles. Must be used flat. Ideal for use in flat perforated plate Buchner type funnels (not sintered glass models). Can be used up to 500°C
Wide range of applications including:

• retention of fine analytical precipitates
• retention of biochemical gelatinous precipitates
• water/air pollution analyses
• as prefilters for membranes
• scintillation counting
• radioimmunoassay.

Three times thicker and with greater wet strength than GF/A. Particle retention to 1µm. Supplied in pack quantities as outlined below.

Alternative Glass microfibre filters, grade GF 6, circles

Specfications:
Thickness:	0,35 mm
Weight:	70 g/m2
Filtration time:	15 s
Particle retention:	0,6 µm
Temperature max.:	200 °C
Binder:	organic

Alternative Glass Microfiber Filters with Binder, Grade GF 10

Glass microfibre filters have a fast filtration and a high loading capacity and particle retention rate. Manufactured without chemical binder from high grade borosilicate glass. (Exception: GF6, GF9). They are suitable for gravity or low suction filtration. Filtration speeds generally very much higher than conventional cellulose papers. Efficient retention of micron size particles. Must be used flat. Ideal for use in flat perforated plate Buchner type funnels (not sintered glass models). Can be used up to 500°C
Wide range of applications including:

• retention of fine analytical precipitates
• retention of biochemical gelatinous precipitates
• water/air pollution analyses
• as prefilters for membranes
• scintillation counting
• radioimmunoassay.

Retention rate:	99.97 %
Filtration time according to Gurley:	40 s

Alternative Glass fibre papers Type MN GF 6 Alternative Fibre Filters with inorganic binder

Glass microfibre filters have a fast filtration and a high loading capacity and particle retention rate. Manufactured without chemical binder from high grade borosilicate glass. (Exception: GF6, GF9). They are suitable for gravity or low suction filtration. Filtration speeds generally very much higher than conventional cellulose papers. Efficient retention of micron size particles. Must be used flat. Ideal for use in flat perforated plate Buchner type funnels (not sintered glass models). Can be used up to 500°C
Wide range of applications including:

• retention of fine analytical precipitates
• retention of biochemical gelatinous precipitates
• water/air pollution analyses
• as prefilters for membranes
• scintillation counting
• radioimmunoassay.

Glass fibre filters are made of 100% borosilicate glass fibres with an inorganic binder. Temperature resistant up to 500°C.
Glass fibre filters are chemically resistant except against hydrofluoric acids and highly concentrated alkalis.
Application:

• Gas-/air-monitoring
• Water and waste water determination

Retention rate:	99.97 %
Filtration time according to Gurley:	20 s

Alternative Filter paper, qualitative, type MN 615, circles Alternative Fibre Filters with inorganic binder

Recommended filters for environmental analysis and controlling both air and water pollution.

• Made of 100 % borosilicate glass fibres with binders
• Glass fibre filters capture fine particles down to 1 µm from liquids, in air, gases and aerosols with even 0.3 to 0.5 µm being absorbed
• Extremely low content in alkali-earth metals
• Chemical stability: It keeps all its properties in contact with acid solutions (except hydrofluoric acid) and basic solutions at moderate concentrations
• Stabile at temperatures up to 500 °C
• Gravimetrical analysis of organic and inorganic impurities in water and waste water according to DIN 38409 and EN 872 (suspended particles)
• Measurement of immission, measurement of dust in air and gases, monitoring of the efficiency of filtration and dedusting, monitoring the combustion air of power plants and of the steel and iron industry
• Measurement of dust release in workplace and production processes and the purification of compartment air
• Measurement of scintillation

Recommended filters for controlling both air and water pollution.

• Made of 100 % borosilicate glass fibres without binders
• Extremely low content in alkali-earth metals
• Chemical stability: It keeps all its properties in contact with acid solutions (except hydrofluoric acid) and basic solutions at moderate concentrations
• Usable as a pre-filter for membranes to prevent the membranes from silting up
• Deposition of (radioactive) aerosols and monitoring of nuclear power plants
• Gravimetrical analysis of organic and inorganic impurities in water and waste water according to DIN 38409 and EN 872 (suspended particles)
• Measurement of immission, measurement of dust in air and gases, monitoring of the efficiency of filtration and dedusting, monitoring the combustion air of power plants and of the steel and iron industry
• Measurement of dust release in workplace and production processes and the purification of compartment air
• Stability at high temperatures: It keeps its properties up to 500 °C
• High flow speed and high permeability to air

Measuring range:	0 to 14 pH - 50 to +150 °C ±1999 mV
Accuracy ±1 Digit:	±0.01 pH ±0.4 °C (-50 to -25.1 °C) ±0.2 °C (-25 to +74.9 °C) ±0.4 °C (+75 to +99.9 °C) ±0.5 % of value (+100 to +150 °C) ±1 mV (0 to ±999 mV) ±2 mV (±1000 to ±1999 mV)
Temperature compensation:	manual -10 to +150 °C auto -50 to +150 °C.

Alternative Qualitative Quartz microfibre filters, QFH, round filters

Alternative Fibre Filters with inorganic binder

The standard glass fibre pre-filter, placed directly on top of the membrane filter. With acrylic latex binder (4% to 6%, determined by ashing).

Type
A: standard glass fiber filter
B: extra thick glass fiber filter
C: binder-free glass fiber filter

This binder free paper offers fine particle retention, high flow rate and good loading capacity. it is used for high efficiency laboratory filtration as well as air sampling. This filter is stable up to +500 °C.

Alternative Glass fibre filters without binder