Circular filters

  • Circular filters
Suitable for quantitative analysis.

  • made of pure cellulose with an alpha cellulose content of almost 100 %
  • extremely low ash content (approx. 0.007 %)
  • wet-strength
  • acid-washed
Cat. No.DiameterGradeUnit
6759115125 mm388 Black spot100
6759116150 mm388 Black spot100
    
6759215125 mm389 White Spot100
6759216150 mm389 White Spot100
    
6759315125 mm389 Blue Spot100
6759316150 mm389 Blue Spot100

Information about filter grades

 388 Black Spot389 White spot391 Blue spot
Applicationsfor coarse and voluminous precipitates such as iron-, aluminium- and chromium hydroxide, Si-determination in steel and pig iron analysiscoarser precipitates such as lead-, iron- and silver sulphide, alcali carbonates, food stuff and soil analysisfine-grained precipitates such as barium sulphate, metastannic acid, cuprous oxide
Filtration propertiesfast filtering
wide pores
soft, lose structure
coarse crystalline		medium fast filtering
medium pores
medium tight
medium crystalline		very slow filtering
fine pores
very tight
very fine crystalline
Filtration velocity10 s/10 ml20 s/10 ml180 s/10 ml
Filtration time (Herzberg)70 s/100 ml
850 ml/min		150 s/100 ml
375 ml/min		2500 s/100 ml
25 ml/min
Basis weight84 g/m284 g/m284 g/m2
Typical pore size
(Retention range/
recommended guide)		12 - 15 μm8 - 12 μm2 - 3 μm


Write a review

Please login or register to review
  • Product: Circular filters
  • SKU:
  • Availability: Pre-Order

Available Options


0 reviews / Write a review

Tags: Circular filters