Quartz Frits

Select your specifications:

A frit is defined as a porous filter composed of bonded grains of quartz glass. Frits are manufactured from the same high purity raw material as our tubing and rod. Some applications of fritted discs include filtration of liquids or corrosive gas, heat diffusion, flow regulation, and chemically inert and high purity applications.

AVERAGE POROSITY

POROSITY PORE SIZE
00 250–550 micron
0 160–250 micron
1 100–160 micron
2 40–100 micron
3 16–40 micron
4 10–16 micron

Porosity

Choosing the correct porosity is key for success in working with glass filters. These frits vary in porosity according to grades that are expressed as 00, 0, 1, 2, 3, and 4. The table below shows the various fields of application for each grade of porosity. The pore size indicates the largest pore in the disc, as well as the diameter of the smallest particle retained during filtration.

 

FRITTED DISC APPLICATIONS

POROSITY

 

NOMINAL MAXIMUM
PORE SIZE (µ)
EXAMPLE FIELDS OF
APPLICATION
250–550 Liquid and gas distribution
160–250 Gas distribution
Gas distribution in liquids at low pressure
Filtration of very coarse precipitates
100–160 Coarse filtration,
Filtration of coarse precipitates, gas distribution
in liquids
Liquid distribution, coarse gas filtration
Extraction apparatus for coarse grain minerals
Loose filter layer substrates for gelatinous precipitates
40–100 Preparatory fine filtration
Preparatory work with crystalline precipitates
Mercury filtration
16–40 Analytical filtration
Analytical work with medium-fine precipitates
Preparatory work with fine precipitates
Filtration in cellulose chemistry, fine gas filtration
Extraction apparatus for fine-grained minerals
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