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1.4.1. Basic rules for testing and the determination of errors

Essential requirements specified in points 1.1 and 1.2 shall be verified for each relevant influence quantity. Unless otherwise specified in the appropriate instrument-specific annex, these essential requirements apply when each influence quantity is applied and its effect evaluated separately, all other influence quantities being kept relatively constant at their reference value. Metrological tests shall be carried out during or after the application of the influence quantity, whichever condition corresponds to the normal operational status of the instrument when that influence quantity is likely to occur.

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Source: EUR-Lex (Cellar) · retrieved 2026-11-06 · Text as adopted (Official Journal); later amendments are not incorporated in this text.