Cellulose filter papers, 150 mm, Grade 1, 100 pieces

These cellulose filters are suitable for qualitative analytical methods for the detection and determination of substances and for the clarification of liquids. 

• Particle retention: >11μm
• Porosity: medium
• Filtration speed: ASTM™, 40 s; Herzberg, 150 s.
• Surface: smooth
• For separating precipitates such as lead sulfate, calcium oxalate (hot) and calcium carbonate.
• For soil analysis and for germination testing in agriculture
• For separating solid food components from the associated liquid or for extracting liquids in the food industry
• For filtering atmospheric dust particles from the air stream and measuring the degree of contamination 
• Impregnation with a chromogenic reagent and quantification of the color formations by optical mirroring in gas detection