AQL sampling standards are: ASQC, Z1.4 MIL-STD-105E, ANSI, BS 6001, ISO 2859. Is a random sampling method based on the principle of mathematical probability, can be calculated according to the total amount of sample goods, while providing a different amount of goods just or reject nonconforming product standard. To the buyer or the seller, the rule is the assessment of the quality of the product. AQL: is the English QUALITY LEVEL ACCEPTANCE abbreviation, namely the average quality level, it is the test of a parameter, not the standard. According to the time of inspection: volume range, inspection level, AQL value determines the number of samples and the number of qualified and unqualified products. Inspection level (I, II, III three general inspection level, as well as S-1, S-2, S-3, S-4 four special inspection level).
Sampling level: II Level: the general level of 2 sampling, according to the actual number of goods, in the AQL table to select the corresponding II, to determine the number of samples of the test:
Defect level: Critical- fatal flaw, cannot have such defects, mainly can result in injury to the user, but defects caused by unsafe factors, not allowed by laws and regulations or provisions of defects;
The main defects of Major-, allowing a certain proportion, mainly for some functions cannot be used normally, due to the presence of defects will affect the function of the product, can shorten the labor service life, can make consumers to abandon the purchase or use of other defects;
Minor slight defects, allowing a certain proportion; the appearance of the product was mainly existed on some imperfect factors, but does not affect the normal use of products.
Defect determination: Accept - Ac (qualified number);
Reject - Re (not eligible to determine the number).
For example: the total number of goods is 10000pcs, customer requirements in accordance with the 0/2.5/4.0 II inspection
Description: first, according to the II AQL standard, in the form of the corresponding number of 10000 is 200, that is, the number of samples is 200pcs, the judgment of the defect is:
Critical (CR) 0, there are 1 or more than 1 of the goods on the decision to reject;
Major (MA) can be allowed to have 10, 11 or more than 11 of the goods on the decision to reject;
Minor (MI) can be allowed to have 14, 15 or more than 15 of the goods on the decision to reject;
Dongguan City days Lunda product quality inspection Co. Ltd. for sampling products are generally required to complete at least more than 85% of the number of production and packaging, sampling samples shall be taken from the finished. For the results of the sampling day, Lunda company will provide customers a sampling of relevant reports (such as 1 cases of wheat confirmed that 2 carton gross weight, size 3, cargo net weight, 4 product photos and so on), if not through the inspection, factory need to do rework inspection 100% of these goods, and report to the customer's final rework situation.
AQL standard form: