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    Medical

    Glass Microfiber Filters for Laboratory Filtration

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

    As a 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 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, super 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 pure borosilicate glass fiber, the large surface area and deep structure provide high 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 pure 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 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 great chemical and thermal resistance properties and their combination permits the application in many of the high 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

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    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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