Whatman Filter Paper Grade 41 ,125 mm

About Whatman Filter Paper Grade 41 ,125 mm

Whatman Grade 41 filter paper circles, 125 mm in diameter, are ashless qualitative filter papers known for their fast filtration speed and suitability for quantitative air and soil pollution analysis. They are designed for analytical procedures involving coarse particles or gelatinous precipitates and can be used for preparing samples for metal analysis after nitric acid digestion. Key characteristics of Whatman Grade 41 circles (125 mm):

• Ashless: Made from pure cellulose with extremely low ash content, making them suitable for quantitative analysis.
• Fast Filtration: Grade 41 is one of the fastest filter papers in the Whatman ashless range, with a filtration speed of 54 seconds (Herzberg).
• Particle Retention: They have a nominal particle retention rating of 20 m.
• Applications: Primarily used for routine air and soil pollution analysis, as well as for preparing samples for metal analysis following nitric acid digestion.
• Quantitative Analysis: Well-suited for quantitative analysis where high flow rates are needed.

High Precision Gravimetric Analysis

With its quantitative ashless formulation and extremely low ash content, Whatman Grade 41 filter paper is engineered for gravimetric analysis. Its high purity ensures minimal interference with results, making it a preferred choice in laboratory settings that demand rigorous analytical accuracy and reproducibility.


Reliable Performance and Versatility

This filter paper's rapid filtration rate and sturdy build provide versatile usability for various applications, such as laboratory filtration and sample clarification. Its smooth, uniform surface and robust cellulose structure ensure even flow and minimal clogging, delivering reliable and consistent performance.


Long-Term Stability and Safe Storage

To maintain optimum quality, store the filter paper in a cool, dry place, away from moisture and direct sunlight. Proper storage preserves the filter paper's shelf life of up to five years, ensuring it is always ready for use when needed, without risk of deterioration or loss of purity.