Accuracy and calculation method of particle size test

 According to ISO13320-2009, the accuracy of particle size testing refers to the error between the measurement result of a certain instrument on a standard sample and the nominal value of the standard sample. Should meet the following requirements:

(1)The cumulative distribution value between D10-D30 should not exceed 3% compared with the nominal value given by the reference material.

(2) The cumulative distribution value between D30-D70 should not exceed 2.5% compared with the nominal value given by the reference material.

(3) The cumulative distribution value between D70-D90 should not exceed 4% compared with the standard value of the standard substance.