Glass Microfiber Filters Without Binder

Recommended in analyses of air and water according to international standards


New range of filters made exclusively with 100% borosilicate glass microfibers and free from any type of bonding agent.

These filters are capable of combining rapid velocities of filtration with high loading capacities together with excellent retention of fine particles.

Technical specifications


Chemical stability

Glass microfiber filters from FILTER-LAB® have an excellent stability, being resistant to the majority of reagents and solvents, except acidic and base solutions of high concentration.

Thermal stability

Likewise, these filters can withstand operating temperatures up to 500ºC. Beyond this approximate value it starts to lose its customary qualities. In case of operating temperatures of up to 900ºC we recommend the use of FILTER-LAB® quartz microfiber filters, ref. MFQ.

Mechanical Resistance

This kind of filters are resistant to creasing, so that’s why the sheets can be folded for transport or sent to the laboratory for field atmospheric analyses, for example.


Glass microfiber filters have high permeability against the passing of air so that is why they generally have good flow velocities. All of this make them ideal for the use in high-volume detectors.

Retention Of Particles

The physical and chemical qualities of the glass microfibers are such that these filters have an excellent level of retention of particles not only on the surface but also depth through mechanisms of electrostatic adsorption and other processes, resulting in some cases of smaller retentions than a micron.

Stability In Weight

Since they are not hygroscopic, the glass microfiber filters do not exhibit significant variations in weight.

Load Capacity

Due to its high apparent density (relation between weight in grams and thickness) and the nature of the fibers, these filters have a large load capacity.

Metal Traces (ppm)

Format and Dimensions


Dimensions: Diameter in mm

Presentation: Packs of 100 units

Dimensions: Measure in mm.

Presentation: Packs of 100 units.

Other formats and dimensions available under demand.


Ref. MFV1

  • Control of immissions into the atmosphere through
    high volume sensors.
  • Determination of suspended solids in water according to EN 872 and Standard Methods 2540D, as well as other analyzes of water pollution
  • Quantitative determination of certain types of algae and bacteria cultures.
  • Biochemical investigations.
  • Determination of the presence of ozone in the air.
  • Leaks reviews solvents.
  • Food analysis.

Ref. MFV2

  • Pre-filtration of samples before membrane filtration.
  • Clarification instrumental samples before analysis.
  • Biochemical assays

Ref. MFV3

  • Determination of suspended solids in water according to EN 872 and Standard Methods 2540D, as well as other analyzes of water pollution
  • Carbohydrate Analysis by hydrolysis.
  • Filtration solvents.
  • Filtering cell cultures.
  • Filtration of samples prior to scintillation counting.

Ref. MFV4

  • Pre-filtration of samples to avoid clogging of the
  • Samples with high load of fine precipitates.
  • Biological solutions.
  • Determination of pollutants in animal fats and vegetable, according LMBG.

Ref. MFV5

  • Analysis organisms in marine waters.
  • Filtration HPLC samples.
  • Biochemical Assays
  • Gravimetric analysis of paints and pigments.
  • Biological fluids.

Ref. MFV6

  • Recommended as Standard Methods 2540D for determining suspended solids, total and dissolved.
  • Clarification of cell cultures.

Information for orders. Glass microfiber filters.