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Filter Disk made of Borosilicate glass - Type: BG, biplane ground

Filter Disk made of Borosilicate glass - Type: BG, biplane ground
Product specification Type BG: ground to nominal diameter and surface biplane, edge non-fused more

Product specification

Type BG: ground to nominal diameter and surface biplane, edge non-fused

General Information Filters made of borosilicate glass are suitable for various applications... more

General Information

Filters made of borosilicate glass are suitable for various applications because of their excellent properties. Applications are pharmaceutical, biotechnology, medical, chemical and environmental. They are used from coarse liquid and gas distribution to bacteria filtering.

THOMAPOR®-borosilicate universal filters are exclusively made of borosilicate glass, without using other substances, such as binding agents which corresponds to DIN ISO 3585. They consist of pure glass grit.

The filter effect of a porous pad comprises screen effect and adsorption. If a filter should only act as a screen, its pores have to be smaller than the solid particles to be filtrated. The fluid volume to be put through is relatively small. Large flow volumes are achieved by use of a filter pad of which the filter effect is primarily based on adsorption. In this case, the filter pores can to be several times larger than the solid particles to be separated; e.g. for sterile filtration of air porous filter pads with pore sizes of 15 to 40 µm are used while the size of the particles to be retained (micro-organisms) is only 1/10 to 1/50 of the filter pore size. A sure adsorption can only be achieved with a very large inner surface of the filter body. If a filter pad is fritted of glass grit should get a large inner surface, the single granule already has to have a maximum large surface.

In this respect the THOMAPOR®-borosilicate universal filter program is an innovation. For production of the granules special crushing processes are used guaranteeing a splintery granule with a particularly large surface. This surface is again enlarged by a special treatment.

THOMAPOR®-borosilicate universal filters are manufactures as round plates in sizes of 5 to 120 mm diameter and are available in two designs:

Type: G: Ground to nominal diameter, edge non-fused

Type BG: Ground to nominal diameter and surface biplane, edge non-fused

The filter porosity is divided into 6 categories and lies between 10 and 500 µm, rendering the filters usable for all work in the chemical and pharmaceutical industry, in the laboratory and in industrial-scale plants.

The pore size indicated refers to the smallest size of particles to be retained during filtration. The porosity is determined by using the bubble pressure method according to Bechhold:

P 500, 250 - 500: Distribution of fluids and gases, supports for solid materials in flow systems

P 250, 160 - 250: Distribution of gases, distribution of gases in fluids with low gas pressure, filtration of coarse precipitations

P 160, 100 - 160: Coarse filtration, filtration of coarse precipitations, gas distribution in fluids, fluid distribution, coarse gas filter, extraction apparatuses for coarse material, supports for loose filter layers against gelatinous precipitations

P 100, 40 - 100: Preparative fine filtration, preparative work with crystalline precipitations, mercury filtration

P 40, 16 - 40: Analytical filtration, analytical work with medium fine precipitations, preparative work with fine precipitations, filtrations in cellulose chemistry, fine gas filters, extraction apparatuses for fine-granular material

P 16, 10 - 16: Analytical fine filtration, analytical work with very fine precipitations (e.g. BaSO4, Cu20), preparative work with corresponding fine precipitations, check-valve and stop valve for mercury

Item Image Outside Ø1
mm
Pore size
µm
Unit
piece
Price
Euro*
Buy
52637
5 250 10 85.00
52638
5 160 10 85.00
52639
5 100 10 85.00
52640
5 40 10 85.00
52641
5 16 10 100.00
52642
10 500 10 90.00
52643
10 250 10 90.00
52644
10 160 10 90.00
52645
10 100 10 90.00
52646
10 40 10 90.00
52647
10 16 10 105.00
52648
20 500 10 92.00
52649
20 250 10 92.00
52650
20 160 10 92.00
52651
20 100 10 92.00
52652
20 40 10 92.00
52653
20 16 10 110.00
52654
25 500 10 100.00
52655
25 250 10 100.00
52656
25 160 10 100.00
52657
25 100 10 100.00
52658
25 40 10 100.00
52659
25 16 10 118.00
52660
30 500 10 105.00
52661
30 250 10 105.00
52662
30 160 10 105.00
52663
30 100 10 105.00
52664
30 40 10 105.00
52665
30 16 10 126.00
52666
40 500 6 87.00
52667
40 250 6 87.00
52668
40 160 6 87.00
52669
40 100 6 87.00
52670
40 40 6 87.00
52671
40 16 6 96.00
52672
50 500 6 117.00
52673
50 250 6 117.00
52674
50 160 6 117.00
52675
50 100 6 117.00
52676
50 40 6 117.00
52677
50 16 6 129.00
52678
60 500 3 93.00
52679
60 250 3 93.00
52680
60 160 3 93.00
52681
60 100 3 93.00
52682
60 40 3 93.00
52683
60 16 3 102.00
52684
70 500 3 141.00
52685
70 250 3 141.00
52686
70 160 3 141.00
52687
70 100 3 141.00
52688
70 40 3 141.00
52689
70 16 3 153.00
52690
80 500 2 110.00
52691
80 250 2 110.00
52692
80 160 2 110.00
52693
80 100 2 110.00
52694
80 40 2 110.00
52695
80 16 2 120.00
52696
90 500 2 139.00
52697
90 250 2 139.00
52698
90 160 2 139.00
52699
90 100 2 139.00
52700
90 40 2 139.00
52701
90 16 2 151.00
52702
100 500 1 118.00
52703
100 250 1 118.00
52704
100 160 1 118.00
52705
100 100 1 118.00
52706
100 40 1 118.00
52707
100 16 1 126.00
52708
120 500 1 170.00
52709
120 250 1 170.00
52710
120 160 1 170.00
52711
120 100 1 170.00
52712
120 40 1 170.00
52713
120 16 1 181.00
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