Grade 91 Qualitative Filter Paper

A general purpose creped filter for less critical routine analysis. 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.

Grade 91: 10 µm

Specifications:

• Grade: Grade 91
• Grade Type: Wet Strengthened
• Typical Particle Retention in Liquid: 10 µm
• Typical Water Flow Rate (ml/min) for 9cm diameter: 274
• Nominal Thickness: 205 µm
• Nominal Basis Weight: 65g/m²
• Nominal Air Flow Rate: 6s/100ml/in²
• Material: Cellulose
• Properties: Creped

Ordering Information: