Quantitative Filter Paper Grade 41, 20um, 320 mm 100/PK is supplied by the company, Whatman PLC.

This Quantitative Filter Paper is an environment pollution filter paper designed to be used for quantitative analysis of soil and air. This Quantitative Filter Paper is the fastest, grade 41 filter paper of the ashless range.

Product specifications:

• Catalog number: 1441-320
• Brand: Whatman
• Quantity/unit: Pack of 100

Product features:

• Grade: Grade 41
• Format: Circles
• Diameter: 320mm
• Type: Ashless
• Material: High-quality cotton linters
• Nominal ash content: 0.007%
• Nominal air flow rate: 4 s/100 ml/in2;
• Nominal basis weight: 85 g/m;2;
• Nominal thickness: 215 m
• Typical particle retention in liquid: 20 m
• Typical water flow rate: 254 ml/min
• Alpha cellulose content min: 98%
• Application: Designed for gravimetric analysis and the preparation of samples for instrumental analysis. For analytical procedures involving coarse particles or gelatinous precipitates (e.g., iron or aluminum hydroxides). Also used in quantitative air pollution analysis as a paper tape for impregnation when determining gaseous compounds at high flow rates