WHATMAN Grade 44 Quantitative Filter Paper, Ashless

GE Healthcare Life Sciences
Whatman Grade 44 quantitative paper is a thin version of Grade 42 ashless paper. The thinness reduces the overall ash content, making Grade 44 well suited for analyses relying on ash-free dry weight.
• Typical Properties
Description Slow to medium
Particle Retention in Liquid (μm) 3
Filtration Speed (approx) Herzberg (s) -
Normal ash content (%) 0.007
Typical Thickness (μm) 176
Basis Weight (g/m2) 80
Typical water flow rate (ml/min)2 11
Nominal air flow rate (s/100 mL/in2) 56

• Ordering Information – Qualitative Filter Circles

Diameter (mm)

Catalog Number

Quantity/Pack

70

1444-070

100

90

1444-090

100

110

1444-110

100

125

1444-125

100

150

1444-150

100

185

1444-185

100

240

1444-240

100


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