Whatman™ Grade 589/2 filters are used in routine quantitative analyses, including analysis of aqueous suspension in paper, flour analysis, and sand content quantification.
• High purity (< 0.01% ash)
• Retention of medium fine precipitates, such as grains of sand
• Herzberg filtration speed of 140 s*
• ‘White ribbon filter’
*The time taken to filter 100 ml water (20°C) through a filter area of 10 cm˛ at a constant pressure of 5 cm water column
Whatman™ quantitative filters are designed for gravimetric analysis. Grade 589/2 Whatman™ ashless filter paper can also be purchased as pre-pleated 589/2 ˝ sheets.
General filtration with quantitative papers
Grade 589/2 ashless filter paper can be used when medium fine precipitates are being collected and papers must be ashed to support analysis. Grade 589/2 is suitable for a variety of routine quantitative analysis methods, such as determination of the sand content in foodstuffs, flour analysis, and aqueous suspension analysis in the paper industry.
