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GLASS MICROFIBER FILTRATION - FLAT STOCK FILTER PAPER

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Glass Microfiber Filters - GRADE 9134-ah ®

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Glass Microfiber Filters - GRADE 9134-ah ®
9134-ah ® - Depth filtration categorizes filter media that traps particulate within the random matrix of fibers found within the thickness of the media. The efficiency rating of the filter is characteristic of the complex pore structure that develops as the fibers overlap. The fibrous material within the filter is commonly glass micro fiber or polypropylene.

In depth filters such as glass micro fiber the purity of the filter is dictated by the presence of if any binder material that acts as a strengthening agent and aids in holding the fibers together.

Because of the characteristically high flow rates of depth filters they are generally used in applications such as single and multi process removal of sediment and course particulate. Glass micro fiber filters are available without binders making the inert matrix an ideal medium to entrap sediment for further analysis and counting. Also depth filtration media is commonly used as pre-filtration prior to surface filtration substrates such as membranes.

Fine porosity fast flow rate with a 1.5m size particle retention. This material is the standard for suspended particle analysis in water and cell harvesting. RIA scintillation counting. Binderless borosilicate glass microfiber

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Glass Microfiber Filters - Grade VSS

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Glass Microfiber Filters - Grade VSS
Grade VSS is Binder free material is manufactured using a proprietary glass chemistry which permits usage in high heat applications beyond typical borosilicate glass blends. Ideally suited for determination of Fixed & Volatile Solids Ignited at 550C" method 2540E. Low fiber shedding improves quality assurance of test results and low percentage of weight loss when used in gravimetric tests. High loading capacity is an attribute of the high surface area and complex pore structure.

Material is also compliant with the requirements of standard method 2540C & 2540D as well as EPA Method 160.2 for establishing water quality in suspended solids content. Total Suspended Solids (TSS) are defined as those which are retained by a Glass-fiber filter disk without organic binder.

Widely used in air pollution monitoring high temperature flue gas and filtration of high temperature solvents.

Known competitive equivalents: Most similar to Whatman 934-AH with high heat tolerance.

Commonly used as TSS substitute for: Ahlstrom 161 Sartorius MG/A Millipore APFA MFS GA-55

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Glass Microfiber Filtration - GRADE TCLP®

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Glass Microfiber Filtration - GRADE TCLP®
Binder-free borosilicate glass fiber filters have 0.7 micron pore size meet U.S. EPA requirements for Toxicity Characteristic Leaching Procedure (TCLP .

Available in six diameters. The 4.7 cm (47mm size is recommended for use in filtering highly granular samples or those with <10% solids; 9 cm (90mm size is recommended for use with highly granular samples; the 14.2 cm (142mm size provides four times the filtration area of 4.7 cm (47mm filters (ideal for samples with >10% solids .

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Glass Microfiber Filtration - GRADE A-E

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Glass Microfiber Filtration - GRADE A-E
Glass Fiber Filters Grade A-E in sizes ranging from 25mm through 8" x 10" sheets. Fine porosity and fast flow rate with a 1.0m size particle retention. Binderless borosilicate glass microfiber with a DOP efficiency of 99.98%. Primarily used in suspended solids and air monitoring.

Features:

Superior grade glass fiber filters for a variety of air sampling methods

For testing dissolved and suspended solids in wastewater and gravimetric analysis of air pollutants.

High flow rates wet strength and high dirt (solids) holding capacities.

Grade A-E meets the requirements for suspended solids testing as described in
Standard Methods for the Examination of Water and Wastewater current edition.

Specifications:

  • Particle retention: 1.0m
  • DOP Efficiency: 99.98%
  • Filtration Speed: 15 sec
  • Thickness: 330 micron (13 mil)
  • Basis Weight: 60g/m

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  • Glass Microfiber Filtration - GRADE A

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    Glass Microfiber Filtration - GRADE A
    Grade A - Fine porosity fast flow rate with a 1.6m size particle retention. Frequently used in the filtration of precipitated proteins and cells. Ideally suited for use as a filter for radioimmuno assay of weak beta emitters by scintillation counting and gravimetric determination of airborne particulate. Binderless borosilicate glass micro fiber.

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    Glass Microfiber Filtration - GRADE B

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    Glass Microfiber Filtration - GRADE B
    Grade B - Fine porosity medium to fast flow rate with a 1.0m size particle retention. Ideally suited for the collection of biochemical polymers that have been precipitated by denaturation. This material is twice as thick as Grade A with a higher loading capacity. May also be used as a solid particulate filter for gasses or as a prefilter. Binderless borosilicate glass microfiber.

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    Quantitative Cellulose Filter - Grade C and 54

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    Quantitative Cellulose Filter - Grade C and 54
    Grade C - Fine porosity fast flow rate with a 1.2m size particle retention. Primarily used for RIA procedures and harvesting lymphocytes. Binderless borosilicate glass microfiber.

    Grade C has several sub groups as follows

    CFP1: Very widely used filter media demonstrating a retention of approximately 11m and medium flow rate. Used in a broad range of laboratory and environmental applications this media is ideally suited in separating lead sulfate calcium carbonate and calcium oxalate precipitates. This media is the standard for agricultural procedures such as soil and seed sample testing. Also it is commonly used as a separation media in the food and beverage industry to extract liquids from solid samples.

    Due to the consistent bright white color of this media it is ideal for photometric stain intensity measurement of air samples. The media can also be impregnated with reagents for use in quantifying optical reflectance in gas detection procedures.

    CFP2: More retentive and absorbent media that CFP1 with approximately 8m and a medium to slow flow rate. This media is ideal for general filtration and absorbent conveyance. Commonly used in plant growth trials and monitoring pre-isolated contaminants in air and gas.

    CFP3: Virtually identical to CFP1 but twice as thick resulting in a significantly slower flow rate with a retention of approximately 6m. This media does not clog as easily as the other qualitative cellulose types which allows for much higher sample volume usage. This media also demonstrates very high levels of absorbency permitting the media to be used as a sample conveyance substrate.

    CFP4: The fastest flow rate demonstrated by any of the qualitative cellulose filter medias resulting in a low retention rate of approximately 20-26m. Very commonly used as the first media in a multi-stage filtration process. Ideally suited for use in organic extractions and biological fluid separation processes. Often specified in air monitoring applications where the entrapment of fine particulate is not required.

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    Glass Microfiber Filtration - GRADE D

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    Glass Microfiber Filtration - GRADE D
    Grade D - Coarse porosity fast flow rate with a 2.7m size particle retention. Well suited for higher volume and repetitive laboratory filtering. Also ideally used as a general pre-filter to extend primary filter life. Binderless borosilicate glass microfiber.

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    Glass Microfiber Filtration - GRADE E

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    Glass Microfiber Filtration - GRADE E
    Fine porosity fast flow rate with a 1.3m size particle retention. This material is an economical media for suspended particle analysis in water cell harvesting pre-filtration and air monitoring applications. Binderless borosilicate glass microfiber.

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    Glass Microfiber Filtration - GRADE F

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    Glass Microfiber Filtration - GRADE F
    Grade F - Fine porosity medium flow rate with a 0.7m size particle retention. Frequently used with Grade D to filter diluted aqueous solutions containing strong oxidizing acidic or alkaline components prior to laser spectroscopy. May also be used for TCLP analysis and collecting extremely fine precipitated proteins including immunoglobulins. Binderless borosilicate glass microfiber.

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    Quartz Micro Fiber FIlters

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    Quartz Micro Fiber FIlters
    Fine porosity with a 99.999% efficiency in air filtration for the retention of 0.6m particles in air at a flow rate of 5cm/second. Primarily used in air pollution monitoring atomic absorption spectroscopy flame emission spectrometry and other applications where an extremely critical analysis is needed. Effective temperature range of up to 1000 C. Binderless quartz micro fiber.

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    Borosilicate Glass Fiber Filters

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    Borosilicate Glass Fiber Filters
    TSS Filters are recommended for use in Standard Methods 2540 C and 2540 D. Optimized surface characteristics of this binderless borosilicate glass microfiber filter eliminates pin-holing and fiber-shedding to ensure consistent accurate results comparable to 934-AH brand filters. Fast flow rate fine porosity and 1.5 m particle retention makes the TSS Filter the preferred choice of environmental chemists for total suspended solids analysis of water and wastewater.

    High flow rate with high capacity. This binderless borosilicate glass fiber media has no added extractables to aid in the elimination of sample contamination. Excellent wet strength.

    Other common usage includes gravimetric analysis of air pollutants membrane support pads membrane prefilters clarification of reagent and buffer solutions filtration of eluent for HPLC moisture analysis pads.

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