The present revision ANSI/ASQ Z1.9-2008 is identical to its 2003 version and continues to allow complete interchange-ability of the tabulated plans with ISO 3951-1, which provided a graphical means for implementation of the plans.ĪNSI/ASQ Z1.9-2008 is also roughly matched to ANSI/ASQ Z1.4-2008, which corresponds directly to the old militarystandard MIL-STD-105E. (This foreword is not a part of Draft American National StandardSampling Procedures and Tables for Inspection byVariables for Percent Nonconforming, ANSI/ASQ Z1.9-2008) All requests should be in writing to the attention of the Standards Administrator at theaddress below.ĪSQ Mission: The American Society for Quality advances individual and organizational performance excellence worldwide by providing opportunities for learning, quality improvement, and knowledge exchange.Ġ0.Z1.9.fm(i-x).qxd:00.Z1.9.fm(i-x).qxd 2/17/09 2:48 PM Page ii All requests pertaining to the ANSI/ASQ Z1.9-2008 Standard should be submitted to ASQ.ĪSQ will consider requests for change and information on the submittal of such requests regarding this Standard. No part of this publication may be reproduced in any form, including an electronic retrieval system, without the prior written permissionof ASQ. Purchasers of American National Standards may receive current informationon all standards by calling or writing the American National Standards Institute.Ġ0.Z1.9.fm(i-x).qxd:00.Z1.9.fm(i-x).qxd 2/17/09 2:48 PM Page iĬopyright protection notice for the ANSI/ASQ Z1.9-2008 Standard.This Standard is subject to copyright claims of ANSI, and ASQ. The procedures of theAmerican National Standards Institute require that action be taken to reaffirm, revise, or withdraw this standard no laterthan five years from the date of publication.
American National Standards are subject to periodic review and users arecautioned to obtain the latest edition.ĬAUTION NOTICE: This American National Standard may be revised or withdrawn at any time. The existence of an American National Standard does not in any respect preclude any-one, whether he has approved the standard or not, from manufacturing, marketing, purchasing, or using products, process-es, or procedures not conforming to the standard. An American National Standard is intended as a guide to aid the manufacturer, theconsumer, and the general public. It is applicable only when the normality of the measurements is assured.ĪMERICAN NATIONAL STANDARD: An American National Standard implies a consensus of those substantially con-cerned with its scope and provisions. Variation may be measured by sample standard deviation, sample range, orknown standard deviation. It provides tightened, normal, and reduced plans to be used onmeasurements which are normally distributed. Sampling Procedures and Tables for Inspection by Variables for Percent Nonconforming is an acceptance sampling systemto be used on a continuing stream of lots for AQL specified. SPONSOR AND SECRETARIATAMERICAN SOCIETY FOR QUALITY SAMPLING PROCEDURES AND TABLES FOR INSPECTIONBY VARIABLES FOR PERCENT NONCONFORMINGĪCCREDITED STANDARDS COMMITTEEZ1 SUBCOMMITTEE ON STATISTICS SAMPLING PROCEDURES AND TABLES FOR INSPECTION BYVARIABLES FOR PERCENT NONCONFORMINGĠ0.Z1.9.Cover.qxd:00.Z1.9.Cover.qxd 2/17/09 2:46 PM Page i You can already simulate using our sampling calculation tool below: enter your shipment lot quantity, and select sampling levels and AQL to see the impact on inspected quantities and accepted defects.AMERICAN SOCIETY FOR QUALITY600 NORTH PLANKINTON AVENUEMILWAUKEE, WISCONSIN 53201 Our trained account managers will be available to ensure you choose the inspection level and AQL values that best suit your needs. How do I determine the right sample size and acceptance number?
Your inspection report will clearly state whether your production has passed or failed your selected Acceptable Quality Tolerance level. Based on the sampling data, the customer can make an informed decision to accept or reject the lot. This document, published by the International Organization for Standardization (ISO), is an international standard with equivalents in all national regulations (ANSI/ASQC Z1.4, NF06-022, BS 6001, DIN 40080).ĪQL (Acceptable Quality Limit) Sampling is a method widely used to define a production order sample to find whether or not the entire product order has met the client's specifications. In performing sampling inspection, QIMA inspectors exclusively apply the ISO 2859 standard and the tables provided by it.