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3. CHECKING OF THE ACTUAL CONTENTS OF A PACKAGE
3.1 The minimum acceptable contents shall be calculated by subtracting the tolerable negative error for the contents concerned from the nominal quantity of the package.
3.2 Packages in the batch whose actual contents are less than the minimum acceptable contents shall be considered defective.
3.3 The number of packages checked shall be equal to the number in the sample, as indicated in the table below.
3.4 If the number of defective packages found in the sample is less than or equal to the acceptance criterion indicated in that table, the group shall be considered as acceptable for the purpose of the check.
3.5 If the number of defective packages found in the sample is equal to or greater than the rejection criterion there indicated, the group shall be rejected.
Number of defective packages | |||
---|---|---|---|
Number in group | Number in sample | Acceptance criterion | Rejection criterion |
100 to 500 | 50 | 3 | 4 |
501 to 3,200 | 80 | 5 | 6 |
3,201 and above | 125 | 7 | 8 |
3.6 For a batch of fewer than 100 packages the batch shall be considered acceptable for the purposes of the check if the number of defective packages does not exceed 5%.
3.7 Non-destructive testing shall be carried out in accordance with a double sampling plan as shown in the table below.
3.8 The first number of packages checked shall be equal to the number of units in the first sample, as indicated in the plan.
3.9 If the number of defective units found in the first sample is less than or equal to the first acceptance criterion, the batch shall be considered acceptable for the purpose of this check.
3.10 If the number of defective units found in the first sample is equal to or greater than the first rejection criterion, the batch shall be rejected.
3.11 If the number of defective units found in the first sample lies between the first acceptance criterion and the first rejection criterion, a second sample shall be checked, the number of units in which is indicated in the plan. The defective units found in the first and second samples shall be added together and:
3.1.1if the aggregate number of defective units is less than or equal to the second acceptance criterion, the batch shall be considered acceptable for the purpose of this check,
3.1.2if the aggregate number of defective units is greater than or equal to the second rejection criterion, the batch shall be rejected.
Samples | Number of defective units | ||||
---|---|---|---|---|---|
Number in batch | Order | Number | Aggregate number | Acceptance criterion | Rejection criterion |
100 to 50 | 1st 2nd | 30 30 | 30 60 | 1 4 | 3 5 |
501 to 3,200 1st 2nd | 50 50 | 50 100 | 2 6 | 5 7 | |
3,201 and over | 1st 2nd | 80 80 | 80 160 | 3 8 | 7 9 |
3.12 Destructive testing shall be carried out in accordance with the single sampling plan below and shall be used only for batches of 100 or more.
3.13 The number of packages checked shall be equal to 20.
3.14 If the number of defective units found in the sample is less than or equal to the acceptance criterion, the batch of packages shall be considered as acceptable.
3.15 If the number of defective units found in the sample is equal to or greater than the rejection criterion, the batch of packages shall be rejected.
Number of defective packages | |||
---|---|---|---|
Number in batch | Number in sample | Acceptance criterion | Rejection criterion |
Whatever the number (≥ 100) | 20 | 1 | 2 |
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