TABLE A 1/ 2/ 3/ Sampling Criteria for Inspection of Shipping Containers (Normal
Inspection)
LOT SIZE
SAMPLE SIZE
DEFECT CLASS
ACTION NUMBER
(CASES)
(BOXES A+B)
1-250
6
Major B
1
Minor
3
251-17,500
20
Major B
2
Minor
8
17,501-250,000
32
Major B
3
Minor
11
>250,000
50
Major B
4
Minor
15
1/
For use with Table C (Table 3-3).
2/
Developed using American National Standard ANSI/ASQC Z1.4-1993.
3/
If there is a disproportionate amount of BOXES, then pull samples
proportionately using the following formula: A + B = Total; (A or B) divided by Total,
multiply by 100 = Proportion of (A or B) to Inspect. (that is, 620 boxes of A and 80
boxes of B. To determine the percentage of A to inspect: 620 + 80 = 700,620 / 700 =
.9714 x 100 = 97 percent (rounded). The sample size for this lot is 20. 20 x .97 = 19
(rounded). The inspector would inspect 19 boxes of A and 1 box of B).
Table 3-1. Sampling criteria for inspection of shipping containers (normal inspection).
TABLE B 1/ Sampling Criteria for Inspection of Shipping Containers (Special
Inspection)
LOT SIZE
SAMPLE SIZE
DEFECT CLASS
ACTION NUMBER
(CASES)
(CASES)
1-75
3
Major B
1
Minor
3
76-250
10
Major B
2
Minor
8
251-600
16
Major B
3
Minor
11
601-1,600
25
Major B
4
Minor
15
1,601-5,000
40
Major B
6
Minor
22
5,001-17,500
63
Major B
8
Minor
31
>17,500
100
Major B
11
Minor
45
1/
For use with Table C (Table 3-3).
Table 3-2. Sampling criteria for inspection of shipping containers (special inspection).
MD0718
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