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These cellulose filters are used in qualitative analytical techniques to determine and identify materials. Pre-plated qualitative filters are also available, which give improved flow rate and increased loading capacity compared to equivalent flat filters.
Grade 2: 8 micro-m
Slightly more retentive than Grade 1 with a corresponding increase infiltration time (i.e., slightly slower filtration speed). More absorbent than Grade 1. In addition to general filtration in the 8 micro-m particle size range, the extra absorbency is utilized, for example, to hold soil nutrient in plant growth trials. Also used for monitoring specific contaminants in the atmosphere and in soil testing. Also available pre-pleated as Grade 2V.
Product 1002-500: Discontinued. No new products will be manufactured after 30th September 2017. No alternative is available.
|Parameter||Grade 2 Qualitative Filter Paper Standard Grade, circle, 110 mm|
|Typical Particle Retention in Liquid1||8 micro-m|
|Nominal Thickness||190 micro-m|
|Typical water flow rate2||38 ml/min|
|Nominal Basis Weight||97 g/m2|
|Nominal Air Flow Rate||20 s/100 ml/in2|
|Nominal Ash Content||0.06%|
|Typical Trace Element Levels||Aluminium 3.6 micro-g/g Antimony <0.5 micro-g/g Arsenic <0.5 micro-g/g Barium <0.5 micro-g/g Boron <1 micro-g/g Calcium 27.5 micro-g/g Chromium 1 micro-g/g Copper 0.9 micro-g/g Iron 13.7 micro-g/g Lead <0.5 micro-g/g Magnesium 21 micro-g/g Manganese <0.5 micro-g/g Mercury <0.5 micro-g/g Potassium 6.2 micro-g/g Silicon 8.8 micro-g/g Sodium 32.3 micro-g/g Zinc 58.3 micro-g/g|
|Application||Used for monitoring specific contaminants in the atmosphere and in soil testing.|