What is the ISO 2859 sampling standard?

ISO 2859 is a series of international standards that provide guidelines for sampling procedures and tables for inspection by attributes. These standards are widely used in quality control processes across various industries to ensure the consistency and reliability of products and processes. ISO 2859 is commonly referred to as the “sampling standard” because it outlines standardized procedures for sampling and inspecting products for quality assurance purposes.

The ISO 2859 series consists of several parts, each addressing different aspects of sampling procedures and tables for inspection by attributes. Some of the key parts of ISO 2859 include:

1. ISO 2859-1: This part provides general principles and guidelines for sampling procedures and acceptance criteria for inspection by attributes. It establishes the basic concepts, terminology, and procedures used in sampling inspection.
2. ISO 2859-2: This part provides specific sampling plans and procedures for single sampling plans indexed by acceptance quality limit (AQL) for inspection by attributes. It includes tables and charts that specify the sample size and acceptance criteria based on factors such as lot size, AQL, and level of inspection desired.
3. ISO 2859-3: This part provides specific sampling plans and procedures for double sampling plans indexed by AQL for inspection by attributes. It extends the principles outlined in ISO 2859-2 to double sampling procedures, which involve taking two samples and making a decision based on the results of both samples.
4. ISO 2859-4: This part provides specific sampling plans and procedures for sequential sampling plans indexed by AQL for inspection by attributes. It outlines procedures for making sequential decisions during the inspection process, which may be more efficient than traditional fixed-sample size plans.
5. ISO 2859-5: This part provides specific sampling plans and procedures for skip-lot sampling plans indexed by AQL for inspection by attributes. It is applicable when it is not practical or economical to inspect every lot and involves inspecting only a portion of the lots based on specified criteria.

Overall, the ISO 2859 series of standards provides a comprehensive framework for sampling procedures and tables for inspection by attributes, helping organizations establish consistent and reliable quality control processes. These standards help ensure that products and processes meet specified quality standards and customer requirements.