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Whatman filter paper # 3 - flat discs and sheets

grade 3:6 one

Double the thickness of grade 1 filter paper, with even higher retention capacity and excellent load capacity: it can hold more precipitate without clogging problems.

The extra thickness ensures greater mechanical strength when wet, making it particularly suitable for use with Buchner funnels.

The high absorbency is particularly useful when paper is used as a sample holder.

Also available in the Whatman FilterCup version: a practical disposable polypropylene filter funnel, 70 mm in diameter and with a capacity of 250 ml, equipped with an integrated thermo-bonded filter.

Grade 3: 6 µm

Technical features

Degree

Grade 3

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

6 µm

Nominal thickness

390 µm

Typical water flow

28 ml / min

Nominal base weight

185 g / m²

Nominal air flow

26 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 track element layers

Aluminum 3.6 µg / g Antimony <0.5 µg / g Arsenic <0.5 µg / g Barium <0.5 µg / g Boron

Applications

For use in büchner funnels.

Format

Discs

Pieces per pack

100 pieces

Code Description
481003042 Whatman filter paper n.3 - flat discs diam. 42.5 mm
481003055 Whatman filter paper n.3 - flat discs diam. 55 mm
481003070 Whatman filter paper n.3 - flat discs diam. 70 mm
481003090 Whatman filter paper n.3 - flat discs diam. 90 mm
481003110 Whatman filter paper n.3 - flat discs diam. 110 mm
481003125 Whatman filter paper n.3 - flat discs diam. 125 mm
481003150 Whatman filter paper n.3 - flat discs diam. 150 mm
481003185 Whatman filter paper n.3 - flat discs diam. 185 mm
481003240 Whatman filter paper n.3 - flat discs diam. 240 mm
481003320 Whatman filter paper n.3 - flat discs diam. 320 mm
481003323 Whatman filter paper n.3 - flat discs diam. 23 mm
481003917 Whatman filter paper n.3 - flat sheets 460x570 mm
481003930 Whatman filter paper n.3 - flat sheets 580x580 mm

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