Reference materials. Good practice in using reference materials Ingestion-build-64721 in the manufacturing of precision

in the manufacturing of precision machines and in medical operations

are within this scope

for aircraft control cable turnbarrels

this standard does not apply to conditions where discontinuities in radiation absorption of elements are deliberately used to modify properties of the radiation beam (for example by rare earth filters)

BS EN 446 on the grout for prestressing tendons procedures is useful for:

Reference materials. Good practice in using reference materials Ingestion-build-64721 in the manufacturing of precision1 Scope 1. 1 This Guide describes good practice in using reference materials (RMs), and certified reference materials (CRMs) in particular, in measurement processes. These uses include the assessment of precision and trueness of measurement methods, quality control, assigning values to materials, calibration, and the establishment of conventional scales. This Guide also relates key characteristics of various types of RMs to the different applications.