High Quality Sintered Glass Filter in Filson

  • Hydrophobic characteristic ensures low solution absorption
  • Manufactured in strict accordance with ISO 9001 standards
  • Durable materials to realize longer replacement intervals
  • Comprehensive types to be ideal for wide range of applications

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Filson sintered glass filter is also called fritted glass filter. After a sintering process at high temperature, sintered glass filter media, typically borosilicate glass, form a porous structure.

Sintered glass filter normally comes in the shape of a disc, thus this kind of filter is also known as fritted glass filter disc, fritted glass disc, or porous glass disc.

There are 6 different grades of sintered glass filter. The grades are numbered from 0-5 and the higher the grade the finer the properties of sintered glass filter.

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Sintered Glass Filter Disc Categories

Sintered Glass Filter Disc Grade 0

Filson sintered glass filter disc grade 0 is constructed of high performance borosilicate glass. Featuring pore size from 160 to 250 microns, it is usually used for coarse filtration, gas dispersion, support for other filter material and so on.

Sintered Glass Filter Disc Grade 1

Filson sintered glass filter disc grade 1 is able to filter impurities ranging from 100 to 160 microns. Thus it is ideal for filtration of coarse precipitates, gas distribution in liquids, coarse gas filtration, extraction apparatus for coarse grain material, etc.

Sintered Glass Filter Disc Grade 2

The pore size of Filson sintered glass filter disc grade 2 is from 40 to 100 microns. Therefore it is commonly used for preparative fine filtration, preparative work with crystalline precipitates, mercury filtration, medium filtration and more.

Sintered Glass Filter Disc Grade 3

Filson sintered glass filter disc grade 3 shows a filtration rating from 16 to 40 microns. With porosity G3, it is applied for analytic filtration, filtration in cellulose chemistry, fine gas filtration, fine grain material filtration and so on.

Sintered Glass Filter Disc Grade 4

Filson sintered glass filter disc grade 4 has a pore size ranging from 10 to 16 microns. This fine pore size makes it suitable for analytical filtration with fine precipitates, valves for mercury collection of very fine particles and more.

Sintered Glass Filter Disc Grade 5

Being the finest grade, Filson sintered glass filter disc grade 5 provides a fine pore size from 1 to 10 microns. Hence it can be used for ultrafine filtration, bacteria filtration and other applications requiring demanding filtration accuracy.

Sintered Glass Filter Types by Applications (3)

  • Sintered Glass Filter in Microbiology
    Filson sintered glass filter is free from all foreign contaminants, chemically clean as well as sterile. Presenting these advantages, it is capable of withholding bacteria. It is frequently used in microbiology, like preparation of sterile solutions.
  • Sintered Glass Filter in Pharmacy
    Due to uniform pore size, chemical cleanliness, sterility and other advantages, Filson sintered glass filter is also ideal for pharmacy applications. For example, intermediates and finished products separation, clarification of liquid oral formulation, etc.
  • Sintered Glass Filter in Laboratory
    Filson sintered glass filter can be used in laboratory applications as well, such as liquid filtration, gas dispersion and more. With pore size grades ranging from 0 to 5, it provides finer filtration performance with the higher number.

Sintered Glass Filter Functions

Filtration of Sterile Products

Sintered glass filter is ideal for sterile filtration of gas or liquid. Due to fine pore size, when gas or liquid flow through the filter, it is able to fungus, bacteria and other contaminants.

Separation of Bulk Drugs

In this application, sintered glass filter works to separate solids of intermediates and finished products from the reaction mixture and remove impurities.

Clarification of Liquid Oral Formulation

To get clear solution, sintered glass filter is used to filter liquid oral formulation by filtration techniques.

Affluent and Waste Water Treatment

Before disposal, waste liquid must be filtered to remove waste solid and sometimes soluble components.

Filson Sintered Glass Filter Factory
Filson Filter - Sintered Glass Filter Fabrication in China

We manufacture complete types of Sintered Glass Filter. They have high-accuracy designs to meet your needs.

Sintered Glass Filter FAQ Guide 

What is Sintered Glass Filter?

Sintered glass filter is made of borosilicate glass. Then these pulverized glass powders or particles are packed into mould. After a sintering process at high temperature, these granules are suitably adhered together, fusing into a porous and solid structure. It is most common in disc shape in various diameters. It is also called fritted glass filter.

 What is Sintered Glass Filte

What is Sintered Glass Filter in Pharmacy?

Sintered glass filter shows zero absorption of medicament from solution. Besides it does not change the pH of the solution and shed fibers as well. Thus it is widely used in pharmacy applications.

What is Sintered Glass Filter in Pharmacy

What are the Advantages and Disadvantages of Sintered Glass Filter?

What are the Advantages and Disadvantages of Sintered Glass Filter

Advantages of sintered glass filter:

  • No fiber shedding
  • Low absorption properties
  • Chemically clean and sterile
  • Do not change solution pH
  • Washable and autoclavable
  • Without cross contamination
  • Free from all foreign contaminants
  • Easy to clean and low labor requirement
  • Effectiveness and long-term sustainability

Disadvantages of sintered glass filter:

  • Chance of getting clogged
  • Expensive and time consuming
  • Fragile in nature, tough to handle

Do not resistant to hot, concentrated H3PO4 and hot alkali

How to Clean Fritted Glass Filter?

After use every time, the glassware with fritted glass filter should be washed as soon as possible. You may use a soft brush to scrub all parts of the item when washing with water.

A gentle approach and soft brush play important part in minimizing abrasion and scratching of the glassware surface. After cleaning, distilled water is required to rinse the glassware thoroughly.

How to Clean Fritted Glass Filter

Then the cleaned fritted glass filters can be dry in natural air or in a dry oven with temperatures under 100°C.

During the cleaning process, the choice of solvent should depend on the contamination. Only the correct solvent is able to clean the contamination effectively.

Because hot, concentrated H3PO4 and hot alkaline solutions can attack the glass surface, they are not suitable as cleaning agents.

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