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. Author manuscript; available in PMC: 2018 Apr 1.
Published in final edited form as: Int J Tuberc Lung Dis. 2017 Oct 1;21(10):1161–1168. doi: 10.5588/ijtld.17.0074

Table A.

Sampling scheme for batch assessment

A If the number of items in the batch consists of <100 containers, for example, patient packs or boxes, then the minimum number of items to be tested is 10% or four containers, whichever is greater. Draw from the total number of containers and sample ≥50 tablets or capsules. 1 container per batch delivered. Draw 50 tablets as sample
2 containers per batch delivered. Draw 25 tablets from each container
10 containers per batch delivered. Sample 4 containers and draw 13 tablets from each container
40 containers per batch delivered. Sample 4 containers only and draw 13 tablets from each item
50 containers per batch delivered. Sample 5 containers equivalent to 10% and draw 10 tablets from each container
97 containers per batch delivered. Sample 10 containers (about equivalent to 10%) and draw 5 tablets only from each container
B If the number of items in the batch consists of >100 but ≤500 containers, for example, patient packs or boxes, then the minimum number of items to be tested is 10 containers. Draw from the total number of containers and sample ≥50 tablets or capsules. 150 containers per batch delivered. Sample 10 containers and draw 5 tablets from each container
375 containers per batch delivered. Sample 10 containers and draw 5 tablets from each container
490 containers per batch delivered. Sample 10 containers and draw 5 tablets from each container
C If the number of items in the batch consists of >500 containers, for example, patient packs or boxes, the minimum number of items to be tested are 2% or 20 containers, whichever is less. Draw from the total number of containers and sample ≥50 tablets or capsules. 540 containers per batch delivered. Sample 11 containers (about 2%) and draw 5 tablets from each container
800 containers per batch delivered. Sample 16 containers (precisely 2%) and draw 3 tablets from each container
1000 containers per batch delivered. Sample 20 containers and draw 3 tablets from each container
2000 containers per batch delivered. Sample 20 containers and draw 3 tablets from each container
9000 containers per batch delivered. Sample 20 containers and draw 3 tablets from each container