AQL (Acceptable Quality Level) vs. PPM (Parts per Million) - Equivalences?

M Greenaway said:
ppm is parts per million, whereas PPM is Parts Per Million.

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Usually non-conforming

Marc said:

> If I have an AQL=0.1, which is the number of defective parts per million I
> will give my customer?

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Check this:

Multi Cavity Sampling Plan - MSPs (Multi-Stream Processes)

Good reference threads! Thanks!

About Capability index and Acceptance methods, I found this article, I tink could be of any help.

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FYI,
A quick review of the mil-std's found that all relating to product sampling have been canceled,, i.e.,1235 105,106,107,414
The replacement is Mil-std-1916 which is combination of a sampling plan with zero defect acceptance and Cpk values. Interesting.

Interesting info, Sam. Thanx.

But most of there standard were changed to private domain

like

MIL-STD-105E (1989)
Sampling Procedures and Tables for Inspection by Attributes
Cancelled by NOT 1 dated 27 FEB 95. Future acquisitions should refer to acceptable NGS on sampling procedures and tables for inspection by attributes, such as ANSI/ASQC Z1.4-1993.

MIL-STD-414 (1968)
Sampling Procedures and Tables for Inspection by Variables for Percent Nonconforming
Cancelled by NOT 2 dated 2 FEB 99. Future acquisitions should refer to acceptable non-Government standard on sampling procedures and tables for inspection by variables for percent defective such as ANSI/ASQC Z1.9-1993.

But they are still the same (with some minor changes) but if you want it, you have to pay.

ref:

https://www.variation.com/techlib/standard.html

Geoff Cotton said:

I hate the word "Acceptable" in AQL, it suggests we are doomed to failure before we start.

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Would "Affordable" or "admissible"be more acceptable...