Filter Disk made of Borosilicate glass - Type: G

Product specification Type: G: ground to nominal diameter, edge non-fused more

Product specification

Type: G: ground to nominal diameter, 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	Outside Ø¹ mm	Porengröße µm	Einheit Stück	Price Euro*
52559	10	500	10	73.00
52560	10	250	10	73.00
52561	10	160	10	73.00
52562	10	100	10	73.00
52563	10	40	10	73.00
52564	10	16	10	83.00
52566	20	500	10	77.00
52567	20	250	10	77.00
52568	20	160	10	77.00
52569	20	100	10	77.00
52570	20	40	10	77.00
52571	20	16	10	97.00
52573	25	500	10	80.00
52574	25	250	10	80.00
52575	25	160	10	80.00
52576	25	100	10	80.00
52577	25	40	10	80.00
52578	25	16	10	94.00
52580	30	500	10	89.00
52581	30	250	10	89.00
52582	30	160	10	89.00
52583	30	100	10	89.00
52584	30	40	10	89.00
52585	30	16	10	103.00
52587	40	500	10	109.00
52588	40	250	10	109.00
52589	40	160	10	109.00
52590	40	100	10	109.00
52591	40	40	10	109.00
52592	40	16	10	119.00
52593	50	500	10	152.00
52594	50	250	10	152.00
52595	50	160	10	152.00
52596	50	100	10	152.00
52597	50	40	10	152.00
52598	50	16	10	178.00
52599	60	500	6	136.00
52600	60	250	6	136.00
52601	60	160	6	136.00
52602	60	100	6	136.00
52603	60	40	6	136.00
52604	60	16	6	170.00
52605	70	500	3	120.00
52606	70	250	3	120.00
52607	70	160	3	120.00
52608	70	100	3	120.00
52609	70	40	3	120.00
52610	70	16	3	155.00
52611	80	500	3	132.00
52612	80	250	3	132.00
52613	80	160	3	132.00
52614	80	100	3	132.00
52615	80	40	3	132.00
52616	80	16	3	170.00
52617	90	500	3	139.00
52618	90	250	3	139.00
52619	90	160	3	139.00
52620	90	100	3	139.00
52621	90	40	3	139.00
52622	90	16	3	190.00
52623	100	500	1	106.00
52624	100	250	1	106.00
52625	100	160	1	106.00
52626	100	100	1	106.00
52627	100	40	1	106.00
52628	100	16	1	139.00
52629	120	500	1	128.00
52630	120	250	1	128.00
52631	120	160	1	128.00
52632	120	100	1	128.00
52633	120	40	1	128.00
52634	120	16	1	155.00