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	Outside Ø¹ mm	Porengröße µm	Einheit Stück	Price Euro*
52637	5	250	10	123.00
52638	5	160	10	123.00
52639	5	100	10	123.00
52640	5	40	10	123.00
52641	5	16	10	144.00
52642	10	500	10	131.00
52643	10	250	10	131.00
52644	10	160	10	131.00
52645	10	100	10	131.00
52646	10	40	10	131.00
52647	10	16	10	153.00
52648	20	500	10	134.00
52649	20	250	10	134.00
52650	20	160	10	134.00
52651	20	100	10	134.00
52652	20	40	10	134.00
52653	20	16	10	159.00
52654	25	500	10	144.00
52655	25	250	10	144.00
52656	25	160	10	144.00
52657	25	100	10	144.00
52658	25	40	10	144.00
52659	25	16	10	171.00
52660	30	500	10	153.00
52661	30	250	10	153.00
52662	30	160	10	153.00
52663	30	100	10	153.00
52664	30	40	10	153.00
52665	30	16	10	182.00
52666	40	500	6	127.00
52667	40	250	6	127.00
52668	40	160	6	127.00
52669	40	100	6	127.00
52670	40	40	6	127.00
52671	40	16	6	139.00
52672	50	500	6	170.00
52673	50	250	6	170.00
52674	50	160	6	170.00
52675	50	100	6	170.00
52676	50	40	6	170.00
52677	50	16	6	188.00
52678	60	500	3	135.00
52679	60	250	3	135.00
52680	60	160	3	135.00
52681	60	100	3	135.00
52682	60	40	3	135.00
52683	60	16	3	149.00
52684	70	500	3	204.00
52685	70	250	3	204.00
52686	70	160	3	204.00
52687	70	100	3	204.00
52688	70	40	3	204.00
52689	70	16	3	221.00
52690	80	500	2	159.00
52691	80	250	2	159.00
52692	80	160	2	159.00
52693	80	100	2	159.00
52694	80	40	2	159.00
52695	80	16	2	174.00
52696	90	500	2	201.00
52697	90	250	2	201.00
52698	90	160	2	201.00
52699	90	100	2	201.00
52700	90	40	2	201.00
52701	90	16	2	219.00
52702	100	500	1	171.00
52703	100	250	1	171.00
52704	100	160	1	171.00
52705	100	100	1	171.00
52706	100	40	1	171.00
52707	100	16	1	182.00
52708	120	500	1	246.00
52709	120	250	1	246.00
52710	120	160	1	246.00
52711	120	100	1	246.00
52712	120	40	1	246.00
52713	120	16	1	262.00