Grade 1 - 125mm Standard Qualitative Filter Paper - 100 Circles

Standard qualitative filter papers are suitable for quadrant folded or gravity flow applications. These grades contain a high level of alpha-cellulose that provides high purity but will weaken when wet. The inherent strength of standard (untreated) grades does not pose a problem when they are used in routine quadrant folded applications. We do not recommend these grades for use in vacuum work or when wet handling is required.

This grade covers a wide range of laboratory applications and is used for clarifying liquids and for rapid filtration of coarser precipitates such as lead sulfate, lead chromate, calcium oxalate, calcium carbonate, aluminum phosphate, barium carbonate and beryllium hydroxide. Grade 01 can be found in soil analysis, seed testing and in air pollution to collect dust-laden air and is also commonly used in the food industry to separate foodstuffs from associated liquid or extracting liquid.

Whatman™ Brand Equivalent Cross Reference: 1001-125. Please note that grade comparisons between manufacturers are approximations based upon generally accepted industry practices. No two grades from different manufacturers are exact matches in terms of physical properties.

• Diameter: 125mm
• Grade: 01
• Particle Retention: 2.5µm
• Flow Rate: Medium
• Filtration speed herzberg (s): 124
• Filtration speed rapidity mls/min: 55
• Units: 100 Circles