Acceptance sampling is used by industries worldwide for assuring the quality of incoming and outgoing goods. Acceptance sampling plans determine the sample size and criteria for accepting or rejecting a batch based on the quality of a sample, using statistical principles.
Many organizations require the use of ISO standards (or their ISO/ANSI/ASQC/BS/Military Standards or other counterparts) for purposes of certification. Below are online versions of Military Standard Tables (equivalent to the civilian ISO/ANSI/ASQC/BS standards), which greatly simplify the process of determining sampling plans. You can find out how many items to sample and inspect, and how to decide whether the entire batch should be accepted or rejected.
|What is it for?
|Single and double sampling plans for attribute (pass/fail) data
ANSI/ASQC Z1.9, ISO 3951, BS6002
|Sampling plans for measurement data
Sampling plans for continuous production
|Dodge-Romig Single Sampling AOQL
|AOQL-based rectifying plan for attribute (pass/fail) data
|Dodge-Romig Single Sampling LTPD
|LTPD-based rectifying plan for attribute (pass/fail) data
|MIL-STD-1916 for Attributes
|Accept-on-Zero (c=0) sampling plans for attribute (pass/fail) data
|MIL-STD-1916 for Variables
|Accept-on-Zero (c=0) sampling plans for measurement data
|Accept-on-Zero (c=0) sampling plans for continuous production
|AQL-based Accept-on-Zero (c=0) sampling plans for attribute (pass/fail) data
|What is it for?
|MIL-STD-105E Switching Rules (ANSI/ASQC Z1.4)
ISO 2859-1 Switching Rules (BS 6001-1)
|Switching rules between levels of inspection
|"Switch from normal to tightened inspection following 5 consecutive accepted batches"
|MIL-STD-1235C Switching Rules
|Switching rules between phases of sampling
|"Switch from 100% inspection to partial sampling after 5 consecutive conforming items"
|Switching rules for batch (attributes and variables) sampling plans
|Switch from normal to reduced inspection following 10 consecutive non-rejected batches