Filtry jakościowe Grade 3
Standardowy filtr stosowany w jakościowych technikach analitycznych do określania i identyfikacji materiałów. Do stosowania na lejach Büchnera.
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.
Filtry jakościowe Grade 3
Grade Grade 3 
Grade Type Standard 
Diameter 70 mm
Typical Particle Retention in Liquid 6 µm 
Nominal Thickness 390 µm
Typical water flow rate 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. 
Product Product Name Format Dimensions
1003-055 Grade 3 Qualitative Filter Paper Standard Grade; circle; 55 mm Circles 55 mm
1003-070 Grade 3 Qualitative Filter Paper Standard Grade; circle; 70 mm Circles 70 mm
1003-090 Grade 3 Qualitative Filter Paper Standard Grade; circle; 90 mm Circles 90 mm
1003-110 Grade 3 Qualitative Filter Paper Standard Grade; circle; 110 mm Circles 110 mm
1003-125 Grade 3 Qualitative Filter Paper Standard Grade; circle; 125 mm Circles 125 mm
1003-150 Grade 3 Qualitative Filter Paper Standard Grade; circle; 150 mm Circles 150 mm
1003-185 Grade 3 Qualitative Filter Paper Standard Grade; circle; 185 mm Circles 185 mm
1003-240 Grade 3 Qualitative Filter Paper Standard Grade; circle; 240 mm Circles 240 mm
1003-320 Grade 3 Qualitative Filter Paper Standard Grade; circle; 320 mm Circles 320 mm
1003-323 Grade 3 Qualitative Filter Paper Standard Grade; circle; 23 mm Circles 23 mm
1003-917 Grade 3 Qualitative Filter Paper Standard Grade; sheet; 460 × 570 mm Sheets 460 x 570 mm (18.11 x 22.45 in)
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