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Description
Covers a wide range of laboratory applications and is frequently used for clarifying liquids. Whatman™ Qualitative Filter Paper: Grade 1 Circles are widely used standard grade filter papers for routine applications with medium retention and flow rates.
Key Information:
- Particle Retention: >11μm
- Porosity: medium
- Filtration speed: ASTM™, 40 sec.; Herzberg, 150 sec.
- Surface: smooth
- Separates precipitates such as lead sulphate, calcium oxalate (hot) and calcium carbonate
- Used for soil analysis and seed testing procedures in the agricultural industry
- Used to separate solid foodstuffs from associated liquid or extract liquid in the food industry
- Atmospheric dust is collected from airflow and the stain-intensity measured
- Impregnated with a chromogenic reagent and colour formation quantified by optical reflectance for gas detection
| 13sec./100mL/sq. in. | |
| Grade 1 Qualitative Filter Paper Standard Grade, circle, 320 mm | |
| Cellulose | |
| 150 sec. | |
| A widely used standard grade filter paper for routine applications with medium retention and flow rate. It covers a wide range of laboratory applications and is frequently used for clarifying liquids. | |
| Medium | |
| 180 μm | |
| 12.59 in. |
| 87 g/m2 | |
| Disc | |
| >11 μm | |
| 57mL/min. (water) | |
| Grade 1 | |
| 100/Pk. | |
| Qualitative Filter Paper | |
| 320 mm |
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