All ProWeigh filters are prepared according to Standard Methods requirements. 42mm binderless glass fiber filters are weighed, washed 3 times in deionized water, dried at 105C and weighed to 0.1mg. Filters come packaged in a labeled aluminum pan with the weight of the filter printed on the label. In addition, the filter weight and ID number are printed in code 128 bar coding.

Size:42mm

Reproducibility: +/-0.2mg

Accuracy:+/-0.4mg max

Pack of 100.