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          Medical

          Glass Microfiber Filters for Laboratory Filtration

           Glass-Microfiber-Filters-for-Lab-Filtration-cbt.jpg

          As a leading supplier of laboratory consumables for many years, Cobetter is committed to providing products with competitive price, accurate test results and short delivery time for our customers.  

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

          Glass fibre filter paper is widely used in laboratory filtration and separation due to their high filtration accuracy, high flow rates, ultra low pressure drop, high load capacity, low extractables and good chemical compatibility.


          Applications

          Basic Analysis

          Food & Beverage

          Pharmaceutical Research

          Air Monitoring



          Glass Microfiber Filters Binder Free

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


          Features and Benefits

          - High retention rate of fine particulate matters

          - Good erosion resistance

          - High flow rate

          - Binder free


          Specifications

          Grade

          Nominal Rating
          (μm)

          Air speed
          (s/100min)

          Thickness
          (μm)

          Weight
          (g/m2)

          Water Flow Rate
          (ml/min)

          Applications

          GF/A

          1.6

          4.3

          260

          53

          143

          Water and air pollution monitoring and wastewater filtration

          Food analysis

          Filtration of algae and bacterial cultures

          Protein filtration

          Weak beta emitter radioimmunoassay

          Determination of airborne particles by weight

          GF/B

          1

          12

          675

          143

          81

          Liquid clarification 

          Liquid scintillation

          GF/C

          1.2

          6.7

          260

          53

          105

          Cell collection

          Liquid scintillation

          Binding assays

          GF/D

          2.7

          2.4

          675

          121

          681

          Thick filter media for increased loading capacity

          Membrane prefilter

          GF/F

          0.7

          19

          420

          75

          41

          DNA purification and binding

          Protein purification filtration

          Filtration of difficult to clarify biochemical solutions and liquids

          Waste leachate toxicity testing

          GF/H

          1.5

          3.7

          435

          75

          341

          Cell collection

          Liquid scintillation

          Water and air pollution monitoring and wastewater filtration

          EPM 2000 

          -

          5.6

          450

          85

          -

          High-volume PM-10 sampling equipment

          ? 98% particle retention rate



          Glass Microfiber Filters with Binder

          The glass fiber 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

          - High erosion resistant

          High flow rate, high retention

          With binder


          Specifications

          Grade

          Air speed
          (s/100min)

          Thickness
          (μm)

          Weight
          (g/m2)

          Applications

          GF6

          -

          350

          80

          Use as a beer filter in applications including protein removal

          Determination of chlorophyll and phytoplankton residue

          Determination of filterable substances and residue on ignition

          Analysis of aggressive media (e.g., acidic gases)

          Determination of iron content in the presence of iron oxides

          Liquid scintillation measurement

          GF8

          12

          350

          80

          Air pollution filters for PCB*, DDE, DDT, furans, and dioxin retention
          for analysis

          Pollution measurements in industrial, urban, and populated areas

          Workplace dust measurements

          Measurement of dust fraction in technical gases

          Dust-collecting effectiveness testing

          GF9

          27

          350

          70

          Determination of PCB*, DDE, DDT, furans, and dioxins in air

          Pollution measurements in industrial, urban, and populated areas

          Dust measurements in the workplace

          Determination of dust fraction in technical gases

          Testing the effectiveness of dust-collecting

          GF10

          12

          350

          70

          Roll filter membranes in automatic air filtration units

          GF-F34

          27

          355

          75

          Measurement of crop protection agent using gas chromatography
          (GC) or HPLC

          Separation and determination of cold sludge when brewing beer

          Soot separation prior to use of gas analyzers

          Roll filters for automatic air filtration units

          GF-F63

          -

          280

          50

          Suitable for PM1, PM2.5, PM10 and TSP sampling and beta-ray attenuation

          GF-F91

          -

          1350

          220

          Meets the requirements of ISO standard 3308:2000




          Glass Microfiber with Surface Coating Treatment 


          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 accumulation of time, usually 3-5 years 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, 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 fiber membranes is made from 0.7 micron density, binder free glass fiber paper, which is acid-treated with low metal content to support TCLP testing by providing accurate information about TCLP limits to ensure the best disposal plan .

           


          Specifications

          Nominal Thickness

          420 μm

          Nominal basis weight

          80 g/m2

          Typical Particle Retention in Liquid

          0.7 μm

          Format

          Customized 



          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. 



          Glass Microfiber bonded with PTFE

          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.


          Features and Benefits

          High dimensional stability and high porosity

          - High temperature resistance

          - Great creep and wear resistance 

          - Broad chemical compatibility

          - Good electrical insulation properties

          - Low air resistance

          - Low moisture



          Applications

          - Aerosol sampling tests

          - Diesel exhaust monitoring

          - Stack emission sampling tests

          - Ambient air monitoring for particulate concentration

          - Waste incinerator with high temperature, high viscosity dust flue gas purification

          - Flue gas purification of the iron and steel smelting blast furnace gas

          - Carbon black, coking furnace flue gas purification

          - Chemical industry, metallurgy, cement and other industries

          - Flue gas dry desulfurization of power plant coal fired boiler



          Glass Fiber Filter for Liquid Analysis

          Glass-Microfiber-Filters-for-Liquid-Filtration-01.jpg

          Glass Microfiber Filters for Air Filtration

          Glass-Microfiber-Filters-for-Air-Filtration-02.jpg




          For technical data sheet or application inquiry, you are more than welcome to contact our sales representative by sales@cobetterfilter.com or leave a message




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