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ISO 2859 Sampling Standard Accoring to the supplied quantity of bearings the institution has received, a certain number, defined by the table, of bearings are randomly selected and designated for testing. for example the sample quantity is 10.000 bearings. From that quantity 80 pieces are randomly picked out in the laboratory, where they are tested in accordance with the three levels(AQL 0.01,AQL1.0 and AQL4). From this table it is evident that on the first level of testing (AQL 0.01) each piece being tested has to satisfy all three conditions. On the second level of testing (AQL 1.0), the acceptable failure is 2 pieces. On the third level of testing, the acceptable failure is 7 pieces.
"↓"use the first sampling plan followed. If sample size is equal or more than batch quantity, doing 100% inspection. |
