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Quartz Sintered Discs
Product Information
Quartz Sintered Discs (Filter Discs / Frits)
With a range of sizes from 10mm to 100mm diameter Robson Scientific sintered discs are available in porosity 0-4. The Key to success when working with sintered discs is selection of the right porosity. The table below shows the porosity ranges and the main fields of application for each grade. The pore size indicated always refers to the largest pore in the disc. This also indicates the diameter of the smallest particle retained during filtration. Porosities are determined using the Bechold bubble-pressure method which has often been described in literature. To achieve rapid filtration it is necessary to produce as many "passage" pores as possible without dead-ends or enclosed hollow spaces.
| Porosity Grade |
Nominal Maximum Pore Size (µM) |
Application Examples |
|---|---|---|
|
0
|
160 - 250 | Gas distribution Gas distribution in liquids at low pressure Filtration of very coarse precipitates |
|
1
|
100 - 160 | Coarse filtration Filtration of coarse precipitates Gas distribution in liquids Liquid distribution Coarse gas filtration Extraction apparatus for coarse grain materials Loose filter layer substrates for gelatinous precipitates |
|
2
|
40 - 100 | Preparatory fine filtration Preparatory work with crystaline precipitates Mercury filtration |
|
3
|
16 - 40 | Analytical filtration Analytical work with medium-fine precipitates Preparatory work with medium-fine precipitates Filtration in cellulose chemistry Fine gas filtration Extraction apparatus for coarse grain materials |
|
4
|
10 - 16 | Analytical fine filtration Analytical work with very fine precipitates(e.g. BaSO4, Cu2O) Preparative work with precipitates of appropriate fineness Non-return and stop valves for mercury |
Download Datasheet (PDF)| Product Code | Diameter mm | Thickness mm | Thickness Tol ±mm |
|---|---|---|---|
| RQSD 10 | 10.00 | 2.50 | 1.00 |
| Product Code | Diameter mm | Thickness mm | Thickness Tol ±mm |
|---|---|---|---|
| RQSD 20 | 20.00 | 4.00 | 1.00 |
| Product Code | Diameter mm | Thickness mm | Thickness Tol ±mm |
|---|---|---|---|
| RQSD 30 | 30.00 | 4.00 | 1.00 |
| Product Code | Diameter mm | Thickness mm | Thickness Tol ±mm |
|---|---|---|---|
| RQSD 40 | 40.00 | 4.00 | 1.00 |
| Product Code | Diameter mm | Thickness mm | Thickness Tol ±mm |
|---|---|---|---|
| RQSD 50 | 50.00 | 5.00 | 1.00 |
| Product Code | Diameter mm | Thickness mm | Thickness Tol ±mm |
|---|---|---|---|
| RQSD 60 | 60.00 | 5.00 | 1.00 |
| Product Code | Diameter mm | Thickness mm | Thickness Tol ±mm |
|---|---|---|---|
| RQSD 70 | 70.00 | 5.00 | 1.00 |
| Product Code | Diameter mm | Thickness mm | Thickness Tol ±mm |
|---|---|---|---|
| RQSD 80 | 80.00 | 5.00 | 1.00 |
| Product Code | Diameter mm | Thickness mm | Thickness Tol ±mm |
|---|---|---|---|
| RQSD 90 | 90.00 | 5.00 | 1.00 |
| Product Code | Diameter mm | Thickness mm | Thickness Tol ±mm |
|---|---|---|---|
| RQSD 100 | 100.00 | 8.00 | 2.00 |
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