The difference between s=3 aql=1.0 and c=0 aql=1.0 is the sampling method.
S=3 refers to sample size sampling. There are four levels and four special inspection levels of S=1, S=2, S=3 and S=4. AQL=1.0 It refers to the level of quality level.
C=0 refers to zero-defect sampling, and AQL=1.0 refers to the quality level.
ACCEPTABLE QUALITY LEVEL? Acceptable quality level (AQL) 1.0 represents the quality level (the smaller the number, the more stringent the quality requirements, there are 0.45 0.25 0.15 0.10 before 1.0).
Extended information:
Principle of folding to determine AQL:
AQL is the dividing line between acceptable and unacceptable process averages and is related to the sampling plan A quality parameter, it is also an index for retrieving the sampling plan from a sampling system such as GB/T2828. In order to determine the appropriate AQL value, some principles are proposed here; however, so far there is no method that can be applied to all different situations. .
Some principles that should be followed when determining AQL:
1. The AQL value is a satisfactory process average quality. It is expected that the supplier's batch average quality will not exceed this value.
2. Consider the use of the product and the consequences caused by product failure. For example, the AQL value of electronic components of the same specification can be larger when used in general civilian equipment than in military equipment; the AQL value can be larger when used in ordinary instruments than in precision instruments.
3. Although AQL is not a requirement for the quality of individual batches, if you really know that the number of unqualified products per 100 units of a certain batch of products (or the number of unqualified products per 100 units) does not exceed the specified AQL value, the batch should be accepted; otherwise, the batch should be rejected.
4. From the perspective of the user, the AQL value cannot be required to be too small. Otherwise, inspection fees and product costs will increase, or product batches will often be rejected, so that the supplier refuses to sign the contract.
5. For products that are urgently needed by users, if the quality of the manufacturer is difficult to improve for a while, in order to obtain the product, the AQL value must be selected to be appropriately larger. The AQL value will be adjusted after the quality of the manufacturer is improved.
6. When there are many spare parts, and unqualified parts are easy to find and replaced with qualified parts when assembled into a whole piece, the AQL can be selected to be larger; if one part fails, it cannot be replaced from the whole piece. If it is dismantled and replaced, the whole piece will fail, so the AQL should be chosen smaller.
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