ISO/TC 334 Standards and guidance documents (Guides formerly published by ISO/REMCO) provide procedures for maximizing the benefit of the use of reference materials in these applications.
The ever-increasing need for new reference materials, in existing and new fields of measurement and testing, continues to lead to the emergence of new producers and new challenges to existing producers. The production of a new reference material requires a strong knowledge of metrology, material handling and preparation and estimation of measurement uncertainty, in addition to the knowledge on the targeted property, the measurement methods involved, and the associated problems with obtaining the best estimate of the quantity value or 'qualitative property' to be certified for a particular material. ISO/TC 334 Guides are a source of this understanding and knowledge. Equally important is that these Guides lay out the “generic characteristics” of reference materials.
ISO 33401:2024 (formerly Guide 31:2015) - Reference materials — Contents of certificates, labels and accompanying documentation
ISO 33403:2024 (formerly Guide 33:2015) – Reference materials – Requirements and recommendations for use
ISO 33406:2024 - Approaches for the production of reference materials with qualitative properties
ISO 33407:2024 - Guidance for the production of pure organic substance certified reference materials
ISO/TR 33402 - Good practice in reference material preparation
ISO Guide 80:2014 – Guidance on the in-house preparation of quality control materials (QCMs). - Withdrawn January 2025 - replaced by ISO/TR 33402
Joint Publications:
ISO 17034:2016 - General requirements for the competence of reference material producers – CASCO
Individual Standards and Guides: