45% cheaper than Whatman Grade 1 Qualitative Filter Papers!
The most widely used filter paper. Medium retention and flow rate. Extended range of circle sizes from 2 to 50cm in diameter. Sheets and strips also available.
This grade covers a wide range of laboratory applications and is frequently used for clarifying liquids. Traditionally the grade is used in qualitative analytical separations for precipitates such as lead sulfate, calcium oxalate (hot) and calcium carbonate.
In agriculture used for soil analysis and seed testing procedures. In the food industry for numerous routine techniques to separate solid foodstuffs from associated liquid or extracting liquid. Widely used in education for teaching simple qualitative analytical separations.
In air pollution monitoring, using circles or rolls, atmospheric dust is collected from an airflow and the stain-intensity measured photometrically. For gas detection the paper is impregnated with a chromogenic reagent and color formation quantified by optical reflectance.