ISO 2859-1:2026

Sampling procedures for inspection by attributes Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection (Edition 3, 2026)

What is ISO 2859-1:2026 on sampling procedures for inspection by attributes?
ISO 2859-1:2026 is the international standard that defines a system of acceptance sampling plans for inspection by attributes. It enables organizations to assess the quality of products or processes based on sample-based inspections — whether you’re checking manufactured components, maintenance records, or administrative procedures.

This third edition introduces skip-lot sampling procedures, updated guidance for applying sampling strategies, and replaces the previous edition from 1999 along with its amendments. It works best when used alongside ISO 2859-0 for illustrative examples and provides everything needed to define AQL-indexed single, double, or multiple sampling schemes.

Why is ISO 2859-1 important?
Sampling inspection is essential for balancing quality assurance with efficiency. Instead of checking every item in a lot, ISO 2859-1 provides statistically robust sampling methods that help organizations:

Detect quality deterioration early
Reduce inspection effort for consistently high-performing suppliers
Maintain trust with stakeholders through internationally accepted quality control methods
The standard also offers incentives for good quality (e.g. reduced inspection or skip-lot inspection) and safeguards for consumers (e.g. switching to tightened inspection if issues are found).
General information
Status : Published
Publication date : 2026-01
Stage : International Standard published
Edition : 3
Number of pages : 82