Cytiva Whatman™ Qualitative Filter Paper: Grade 3 Circles
A standard grade filter used in qualitative analytical techniques to determine and identify materials. For use in büchner funnels.
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.
|Thickness||390 µm (typical)|
|Particle Retention||6 µm (Particle retention rating at 98% efficiency), in liquid max.|
|Filtration Speed||Approx. 2 s (Herzberg)|
|Burst Strength||0.034 bar, wet burst; 1.930 bar, dry burst|
|Flow Rate||Medium flow, thick|
|Basis Weight||187 g/m²|
|Airflow Rate||26 s/100 ml/in²|
|Tensile Strength||72 N/15 mm Tensile M/D Dry|
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