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What is Grade 323?

This fast flow rate grade with very good retention is a tighter version of Grade 325. .A general purpose creped filter has a rough surface for less critical routine analysis. It is often found in the food industry and is widely used to assay sucrose in cane sugar and within pharmaceutical laboratories for routine filtration. 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.

Whatman Cross Reference = No.91
Speed class Fast Filtration
Thickness (mm) 0.09
Pore size (μM) 8-10
Weight (g/m²) 75
*According to DIN 53137
Available Sizes
Diameter (mm) Product Code
55 323055
70 323070
90 323090
110 323110
125 323125
150 323150
185 323185
240 323240
300 323300
320 323320