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GE Healthcare
Filter Circles, Qualitative, Grade 540

The general purpose hardened ashless filter paper with medium retention and flow rate. Extremely pure and strong with a hard surface. High chemical resistance to strong acid and alkali. Frequently used in the gravimetric analysis of metals in acid / alkali solutions and in collecting hydroxides after precipitation by strong alkalis.
Description:medium
Particle retention in liquid:8 µm
Filtration speed Herzberg:200 s
Ash content:< 0.006 %
Typical thickness:160 µm
Basis weight:88 g / m2
 Ø
mm
PUOrder No.in Stock 
 211005428661-Login / Registration
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Particle Retention Rating at 98 % efficiency.
Ash is determined by ignition of the cellulose filter at 900 °C in air.