Whatman Grade 3 Qualitative Filter Papers
Whatman Grade 3 Qualitative Filter Papers
Whatman Grade 3 Qualitative Filter Papers
A standard grade filter used in qualitative analytical techniques to determine and identify materials. For use in büchner funnels.
Prepleated qualitative filters are also available, which give improved flow rate and increased loading capacity compared to equivalent flat filters.
Grade 3: 6 µm
Double the thickness of Grade 1 with still finer particle retention and excellent loading capacity; more precipitate can be held without clogging. The extra thickness gives increased wet strength and makes this grade highly suitable for use in Büchner funnels.
The high absorbency is particularly valuable when the paper is used as a sample carrier. This filter is also available in the FilterCup. This is a convenient, disposable 70 mm filter funnel with a 250 ml capacity molded from polypropylene with an integral, heat bonded filter (catalog number 1600-003).
Product 1003-433: Discontinued. No new products will be manufactured after 30th September 2017. No alternative is available.
Specification
Grade :Grade 3
Grade Type :Standard
Diameter :150 mm
Typical Particle Retention in Liquid1 :6 µm
Nominal Thickness :390 µm
Typical water flow rate2 :28 ml/min
Nominal Basis Weight :185 g/m²
Nominal Air Flow Rate :26 s/100 ml/in²
Nominal Ash Content :0.06%
Material :Cellulose
Typical Trace Element Levels :Aluminium 3.6 µg/g Antimony <0.5 µg/g Arsenic <0.5 µg/g Barium <0.5 µg/g Boron <1 µg/g Calcium 27.5 µg/g Chromium 1 µg/g Copper 0.9 µg/g Iron 13.7 µg/g Lead <0.5 µg/g Magnesium 21 µg/g Manganese <0.5 µg/g Mercury <0.5 µg/g Potassium 6.2 µg/g Silicon 8.8 µg/g Sodium 32.3 µg/g Zinc 58.3 µg/g
Properties :Thick
Application :For use in büchner funnels.
Format :Circles
Dimensions :Ø 150 mm
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