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Code 481005090

Whatman filter paper n.5 - flat discs diam. 90 mm

grade 5:2.5 um

This filter paper guarantees the highest degree of filtration of fine particles among qualitative filters.

Capable of retaining the fine precipitates found in chemical analysis.

Low flow rate.

Excellent filter for clarifying turbid suspensions and for water and soil analysis.

Grade 5: 2.5 µm

Technical features

Degree

Grade 5

Nominal retention of particles in liquids (at 98% efficiency)

2.5 µm

Nominal thickness

200 µm

Typical water flow

5 ml / min

Nominal base weight

100 g / m²

Nominal air flow

96 s / 100 ml / in (for 9 cm diameter)

Nominal ash content

(determined by

incineration of the filter at 900 ° C

in the air)

0.06%

Material

Cellulose

Typical tracks element layers

Aluminum 2,5 µg / g Antimony <0,5 µg / g Arsenic <0,5 µg / g Barium <0,5 µg / g Boron <1 µg / g Calcium 8,3 µg / g Chromium 1,5 µg / g Copper 2 µg / g Iron 12 µg / g Lead <0.5 µg / g Magnesium 4 µg / g Manganese <0.5 µg / g Mercury <0.5 µg / g Potassium 2.3 µg / g Silicon 6, 2 µg / g Sodium 16.8 µg / g Zinc 64.5 µg / g

Applications

Excellent clarifying filter for turbid suspensions and for water and soil analysis.

Format

Discs

Pieces per pack

100 pieces



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