- Thick filter paper- For fast filtration of coarse precipitates.- Properties: medium fast.- Retention range: 7 to 12 µm.- Weight: 80 g / m2.- Thickness: 0.32 mm.- Filtration time acc. to Herzberg: 100 s. - Thick filter paper- For fast filtration of coarse precipitates.- Properties: medium fast.- Retention range: 7 to 12 µm.- Weight: 80 g / m2.- Thickness: 0.32 mm.- Filtration time acc. to Herzberg: 100 s.
Slightly more retentive with a corresponding increase in filtration time (i. e. slightly slower filtration speed) and more absorbent than grade 1. In addition to general filtration in the 8 µm particle size range, the extra absorbency is utilised, for example, to hold soil nutrient in plant growth trials. Also used for monitoring specific contaminants in the atmosphere and in soil testing. Also available as folded filter (prepleated) grade 2V*. Slightly more retentive with a corresponding increase in filtration time (i. e. slightly slower filtration speed) and more absorbent than grade 1. In addition to general filtration in the 8 µm particle size range, the extra absorbency is utilised, for example, to hold soil nutrient in plant growth trials. Also used for monitoring specific contaminants in the atmosphere and in soil testing. Also available as folded filter (prepleated) grade 2V*.
Time saving: because of their large surface area they filter much faster than filter circles.- Technical details as filter circles. Time saving: because of their large surface area they filter much faster than filter circles.- Technical details as filter circles.
- Time saving: because of their large surface area they filter much faster than filter circles. - Retention range: 4 to 7 µm.- Weight: 85 g / m2.- Thickness: 0.19 mm.- Filtration time acc. to Herzberg: 140 s.- Filtration time acc. to DIN 53 137: 11 t - Time saving: because of their large surface area they filter much faster than filter circles. - Retention range: 4 to 7 µm.- Weight: 85 g / m2.- Thickness: 0.19 mm.- Filtration time acc. to Herzberg: 140 s.- Filtration time acc. to DIN 53 137: 11 t