 International vocabulary of metrology by JCGM

Directly inspected VIM3 entry4.2, blank indication: indication from a similar phenomenon/body/substance with the quantity of interest assumed absent or not contributing. Cite the specific edition/entry; do not conflate the broader VIM background-indication alternate term with every narrower chemical blank usage.

Further VIM3 locators: Entry 5.1, measurement standard, definition and notes 1–5 and Entry 2.8, primary reference measurement procedure, definition and gravimetric-volume example.

Further VIM3 locators: Entry2.15, measurement precision; Entry2.20, repeatability conditions; Entry2.21, measurement repeatability.

Further VIM3 entries: 2.14, measurement trueness; 2.22, intermediate precision conditions; 2.23, intermediate measurement precision; 2.24, reproducibility conditions; 2.25, measurement reproducibility.

Further VIM3 entries: 2.6, measurement procedure and 3.2, measuring system.

Verified device and procedure entries: jcgm.bipm.org/vim/en/3.1.html and jcgm.bipm.org/vim/en/3.2.html and jcgm.bipm.org/vim/en/2.6.html

Entry3.1 is measuring instrument; entry3.2 is measuring system, which may consist of one instrument. Entry2.6 defines a detailed measurement procedure including a model and calculation, with an optional target uncertainty.

Additional verified VIM3 material entries: jcgm.bipm.org/vim/en/5.13.html and jcgm.bipm.org/vim/en/5.14.html

Entry5.13 defines reference material through property-specific homogeneity, stability and fitness for intended use; note2 distinguishes precision control without an assigned value from calibration/trueness control requiring an assigned value. Entry5.14 defines certified reference material and its documented property values, uncertainties and traceabilities.

Additional VIM3 locators: Entry 2.9, measurement result, notes 1–3; Entry 2.5, measurement method, note and annotation of 11 June 2015; Entry 3.10, measuring chain and examples 1–2. Entries 5.13 and 5.14 distinguish reference materials and certified reference materials: 5.13, note 2 and 5.14, notes 1 and 3–4.

Additional VIM3 locators: Entry 2.4, measurement principle, definition and physical example 1; Entry 2.10, measured quantity value, note 1 and annotation of 9 December 2016; Entry 3.7, measuring transducer, definition and examples.

Additional VIM3 locators: Entry 4.1, indication, definition and notes 1–2; Entry 4.12, sensitivity, definition and notes 1–2.

Additional verified locator: jcgm.bipm.org/vim/en/4.18.html , VIM3 entry 4.18, detection limit. The definition specifies a probability beta of falsely claiming absence at a given probability alpha of falsely claiming presence; note 1 gives IUPAC default values alpha = beta = 0.05. An observed decision threshold and a signal level meeting both error-probability criteria are distinct quantities.