GRADE 1: Suitable for medium retention & flow rate applications. Grade 1 is the standard filter paper and is mostly used filter paper for routine applications in the laboratory. This grade is widely used for clarifying liquids and in qualitative analytical separations for precipitates such as lead sulfate, calcium oxalate & calcium carbonate.
General Properties of Grade 1 are:
1. Particle Retention Liquid – 9 µm,
2. Initial Filtration Speed -155 secs/100 ml,
3. Thickness – 0.20 mm,
4. Weight – 87 g/m2,
5. Dry Bursting Strength – 89 KPa.