12128 12634

Filter pads

Whatman® qualitative filter paper

  • 150mm diameter
  • 140mm diameter
  • 100 pieces
  • cellulose sheets
  • Grade 91

Learn more about this accessory

These extremely strong filter papers have a high wet strength due to the addition of a small quantity of chemically stable resin. Normal qualitative applications will not introduce any significant impurities into the filtrate. The resins do, however, contain nitrogen so these grades should not be used in Kjeldahl estimations, etc. Some wet strengthened grades are available in folded (prepleated) forms.

ID-N° 12128 – 150mm diameter

ID-N° 12634 – 140mm diameter

Specifications

Material

cellulose filters
circles

Packaging

pack of 100

Parameter

2 psi wet burst
70 sec/100 mL speed (Herzberg)

Diameter 

150 mm or 140mm 

Thickness

205 μm

Pore size

10 μm (Particle retention)

Weight

71 g/m2

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