This application designs a sampling plan for variables, according to the ANSI/ASQ Z1.9 tables, for a given lot size and AQL. It also calculates the estimated percent defectives in a lot, given the known or estimated variability.

For the MIL-STD-414 tables click here.

More about acceptance sampling plans.

Enter your process parameters:
Variability	Unknown Known	Select "Unknown" if you plan to estimate the variability from the sample. Select "Known" if it is given or you know the variability from historical data
Batch/lot size (N)	2 to 89 to 1516 to 2526 to 5051 to 9091 to 150151 to 280281 to 400401 to 500501 to 12001201 to 32003201 to 1000010001 to 3500035001 to 150000150001 to 500000500001 and over	The number of items in the batch (lot).
AQL	0.10%0.15% 0.25%0.40%0.65%1.0%1.5%2.5%4.0%6.5%10.0%	The Acceptable Quality Level. What to do if my AQL is different?
Inspection Level	S-3S-4IIIIII	Determines the discrimination power of the plan (level)
Type of inspection	NormalTightenedReduced	Depends on the quality history (type)