Glass Microfiber Filters for Laboratory Filtration

Cobetter as a leading supplier of laboratory consumables for many years and is committed to bringing it’s customers products that cost less, more accurate test results and less time to take.

Cobetter uses the finest natural materials to ensure consistent high quality, reproducibility and uniformity in every filter paper produced. Each filter paper is rigorously tested before leaving the factory in terms of weight, thickness, air flow rate and mechanical strength.

Glass fibre filter papers are widely used in Laboratory Filtration and Separation due to their broad filtration accuracy, fast flow rates, ultra low pressure drop, high load capacity, low extractables and broad chemical compatibility.

Applications

- Basic Analysis

- Food & Beverage

- Pharmaceutical Research

- Air Monitoring

The membranes are made from 100% borosilicate glass fibre, the large surface area and deep structure provide excellent impurity retention and low filtration resistance. Glass fibre filter membranes can adsorb particles down to 0.7um in liquids and <1um in air and gases. Withstands temperatures up to 500°C.

Features and Benefits

- Retains fine particulate matter

- Erosion resistant

- Fast flow rate, high retention

- Binder free

Specifications

The glass fibre membrane is made of 100% borosilicate glass fibre. The binder is added to enhance the mechanical strength of the glass fibre membrane and is mainly used to filter coarse particles (e.g. macromolecules, dust).

In order to avoid chemical reactions with the filtered material, glass fibre membranes with inorganic binders are used for the filtration of organic substances and glass fibre membranes with organic binders are used for the filtration of inorganic substances.

Features and Benefits

- High wet mechanical strength

- Erosion resistant

- Fast flow rate, high retention

- With binder

Specifications

TCLP Testing Filters (Acid-treated with low metal content)

For a long time we have been using landfills to dispose of solid waste, but the solid waste leachate from landfills is continuously polluting the groundwater and soil, with the amount of waste and the accumulation of time, 3-5 years usually the waste leachate will pollute 1-2km of soil and groundwater in the landfill area, this process persists for 10-20 years, the pollution area will gradually expand.

We need to constantly monitor the spread of contaminants in the area around the solid waste landfill, continually assess the potential risks and recover and dispose of waste leachate in a sound manner. The TCLP approach is commonly used in the assessment of landfill solid waste contamination risks.

To dispose of hazardous waste in a United States municipal landfill, TCLP limits must fall within standard levels set for maximum contamination levels (MCLs).

Cobetter TCLP glass fibre membranes are made from 0.7 micron dense, non-binder glass fibre paper, which is acid-treated with low metal content to support TCLP testing by providing accurate information about TCLP limits to ensure the best possible disposal plan can be put into action.

Features and Benefits

- High wet mechanical strength

- Erosion resistant

- Fast flow rate, high retention

- With binder

Specifications

Gas-Absorption Filters (Copper acetate treatment)

In the detection process of gas sensor, the composition of the detected gas is often complex, and it is easy to create cross interference between different gases. For example, for gas sensor that is indicated to detect carbon monoxide, hydrogen could be also on the gas sensor if hydrogen’s concentration is high in the test environment. Then hydrogen may also react and get a signal that the concentration of carbon monoxide is higher than the actual volume.

In order to reduce the interference of some non-specific gases in air detection process, Cobetter glass fiber membrane with copper acetate treatment can absorb some interfering gases in the air, such as H2S, HMDS, etc.

Features and Benefits

- Rapid diffusion speed.

- High adsorption capacity.

- Efficient adsorption for interfering gases.

- Low chemical background, no adsorption on detected gas.

- Provide customization with a variety of specifications and treatment options. 

Pure borosilicate glass microfibers reinforced with woven glass cloth and bonded with PTFE. Both glass and PTFE display excellent chemical and thermal resistance properties and their combination permits the application in many of the most demanding filtration environments.