Filter papers - Circular filters

Suitable for ordinary qualitative-technical filtration purposes.
  • made of very pure cellulose with a high alpha cellulose content
  • low ash content (average content is approx. 0.1 %)
  • wet-strength
  • for medium crystalline precipitations


Circular filters:
Cat. No.DiameterGradeUnit
675880970 mm3 hw100
675881290 mm3 hw100
6758814110 mm3 hw100
6758815125 mm3 hw100
6758816150 mm3 hw100
675890970 mm6100
675891290 mm6100
6758914110 mm6100
6758915125 mm6100
6758916150 mm6100
675960970 mm292100
675961290 mm292100
6759614110 mm292100
6759615125 mm292100
6759616150 mm292100

Information about filter grades

Grade2923 hw6
Similar to Whatman1student grade114
Surfaceplainplainplain
Filtration propertiesmedium tightmedium crystallinemedium crystalline
Filtration velocity50 s/10 ml20 s/10 ml15 s/10 ml
Filtration time 
(Herzberg)
500 s/100 ml
120 ml/min.
140 s/100 ml
430 ml/min.
70 s/100 ml
850 ml/min.
Basis weight87 g/m265 g/m280 g/m2
Typical pore size5-8 μm8 - 12 μm10 - 13 μm

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Tags: Filter papers - Circular filters