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Quartz Sintered Discs

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
Product CodeDiameter mmThickness mmThickness Tol ±mm
RQSD 1010.002.501.00
Product CodeDiameter mmThickness mmThickness Tol ±mm
RQSD 2020.004.001.00
Product CodeDiameter mmThickness mmThickness Tol ±mm
RQSD 3030.004.001.00
Product CodeDiameter mmThickness mmThickness Tol ±mm
RQSD 4040.004.001.00
Product CodeDiameter mmThickness mmThickness Tol ±mm
RQSD 5050.005.001.00
Product CodeDiameter mmThickness mmThickness Tol ±mm
RQSD 6060.005.001.00