Grade 589/3 Quantitative Ashless Filter Circles

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Grade 589/3 Quantitative Ashless Filter Circles

Grade 589/3 Quantitative Ashless Filter Circles

Whatman® quantitative filters are designed for gravimetric analysis and the preparation of samples for instrumental analysis. They are available in three formats designed to meet your specific needs. 0.007% ash maximum - very pure filters ideal for a wide range of critical analytical filtration procedures.

Grade 589/1: 12-25 µm
‘Black Ribbon Filter' - the established standard in quantitative analysis for the filtration of coarse precipitates (class 2a acc. to DIN 53 135). Ashless filter paper with very high flow rate. Used for many quantitative standard methods, especially for gravimetric applications (e.g. determination of the ash content in foodstuffs to Section 35 LMBG*), or for the Blaine test in the cement industry.

Grade

Properties

Classification to DIN 53135

Thickness (mm)

Filtration time to Herzberg

Weight DIN 53 137 (s)

Retention g/m

Range* (µm)

589/1

Fast

2a

0.19

50

6-12

80

>12-25

589/2

Medium Fast

2b

0.19

140

11-35

85

4-12

589/3

Slow

2d

0.15

1500

100-200

85

<2

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  • Quantitative Ashless Filter Circle
  • 110mm
  • AKM-9007-0306
  • 100
  • $53.81
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  • Quantitative Ashless Filter Circle
  • 125mm
  • AKM-9007-0307
  • 100
  • $62.08
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  • Quantitative Ashless Filter Circle
  • 150mm
  • AKM-9007-0308
  • 100
  • $78.57
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  • Quantitative Ashless Filter Circle
  • 185mm
  • AKM-9007-0309
  • 100
  • $115.73
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