Available in pack of 100 strips, 80 x 6 mm ( L x W). Dyes are chemically bonded to prevent leaching.

Glass microfibre filters have a fast filtration and a high loading capacity and particle retention rate. Manufactured from high grade borosilicate glass. 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. Filtration velocity acc. to Herzberg.

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 and sheets. Qualitative. Slightly thicker and more retentive than number 1.

Circles. Qualitative. General purpose schools grade, creped.

Circles. Qualitative. Fast flowrate. Excellent retention of coarse and gelatinous precipitants. Smooth. Supplied in packs of circles as outlined below.

The general purpose high efficiency glass microfibre filter. Particle retention to 1.6 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.
Extremely efficient filter made to retain fine particles and micro organisms. Particle retention to 1.2 µm.

Circles and sheets. Qualitative. The most widely used grade of filter paper.

Circles. Quantitative. Ashless.

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.
Three times thicker and with greater wet strength than GF/A. Particle retention to 1µm.

Circles. Quantitative. Ashless. For filtration of fine precipitates.

Very slow, <2 µm

• thick filter paper
• for fine precipitates
• Weight: 85g/m²
• Thickness: 0.15mm

Medium fast, 4 to 12 µm. White ribbon.

• for the analysis of foodstuffs
• for carbonates of alkaline earth metals, (NH₄)₃[P(Mo₃O₁₀)₄] x aq., Mg(NH₄)PO₄, CaC₂O₄ (hot precipitates)
• Weight: 85g/m²
• Thickness: 0.18mm

Slow < 2 µm. Blue ribbon.

• for very fine precipitates and small particles
• for soil analysis
• for BaSO₄ (hot precipitate), PbSo₄, Cu₂O, ZnS, NiS
• Weight: 84 g/m²
• Thickness: 0.16 mm

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

Fast 12 to 25µm
Black ribbon

• for coarse, high volume precipitates
• for determinations according to the German Standard Methods for the examination of water, waste water and sludge.
• most frequently used quantitative filter
• Weight: 80g/m²
• Thickness: 0.19mm

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.
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.

Syringe filters are suitable for rapid sample filtration and are used in a variety of applications, such as capillary electrophoresis, protein filtration, and UV spectroscopy sample preparation. With female Luer lock inlet.

For the ready-to-use filter units, only virgin raw material is used. This ensures that there is no interaction with the sample to be filtered, provided that the units are used properly. The filter units are intended for laboratory use only.

Note: If syringes with a volume &lt;10 ml are used, a pressure could be created which exceeds the max. operating pressure (700 kPa/7 bar) of the filter unit.
Hydrophilic membrane made of cellulose acetate (CA). Very low protein binding capacity.

• Housing made of PC
• Outlet male Luer cone
• Autoclavable at 121 °C

Plain white. Circles.
Application

• For prefiltration and dust measurement, clarification and filtration
• Filtration of aqueous solutions

• Very easily wettable
• Hydrophilic
• Used up to 125 °C
• Autoclavable (121 °C)

Slow < 2µm

• thick filter paper
• for fine precipitates
• Weight: 84g/m²
• Thickness: 0.16mm

Ashless. For filtration of coarse and gelatinous precipitates.

Qualitative. Folded (pre-pleated) version of Number 2.

Hydrophilic, durable and compatible with a wide range of aqueous solutions, organic solvents and for the filtration of biological preparations and media. Autoclavable at 121 °C.

For the safe removal of surface moisture and grease from lenses and other optical surfaces. Chemically pure and free from silicones and other additives.

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

Applications:

• Excellent for gravimetrical analysis
• Especially for aqueous solutions
• Ideally suitable for contamination test

• Economical
• Constant weight
• Hydrophilic
• Not sterile
• Can be used up to 125 °C
• Autoclavable up to 121 °C

Compatible with Hirsch or Büchner funnels, average thickness 115 µm. Acid-treated for high wet-strength and chemical resistance.

• Nominal particle retention of 2.7 µm
• Slow flow rates (Herzberg filtration speed 2685 s)
• High purity and low ash content (0.015 % ash maximum)

Very thin and soft, lint-free tissue paper for cleaning optical glasses and cuvettes. Weight: 13 g/m³

Medium fast 4 to 7µm

• thin filter paper
• for medium to fine precipitates and general laboratory work
• Weight: 68g/m²
• Thickness: 0.150mm

Medium fast, 4 - 7µm

• thicker and faster than 595
• for medium to fine precipitates
• Weight 85 g/m²
• Thickness 0.180 mm

Syringe filters are suitable for rapid sample filtration and are used in a variety of applications, such as capillary electrophoresis, protein filtration, and UV spectroscopy sample preparation. With female Luer lock inlet.

For the ready-to-use filter units, only virgin raw material is used. This ensures that there is no interaction with the sample to be filtered, provided that the units are used properly. The filter units are intended for laboratory use only.

Note: If syringes with a volume &lt;10 ml are used, a pressure could be created which exceeds the max. operating pressure (700 kPa/7 bar) of the filter unit.
Hydrophilic membrane for aqueous and light organic solutions with a low binding capacity for proteins.

• Housing made of PP
• Outlet male Luer cone
• Autoclavable at 121 °C

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.
To Herzberg.

Provides a single disposable, manual pressure filtration system which is fast and easy to use in sample preparation.

• Built-in pre-filter for 'difficult' samples
• Minimal waste