IUPAC - path-length (08278)

path-length symbols: $l$ , $s$ , units: $m$ , $μ m$ , $mm$ , $cm$

Synonym: path length

https://doi.org/10.1351/goldbook.08278

Length of the optical path through the sample.

Notes:

In a transmission cell the path-length is usually taken as the distance between the windows.
SI unit: $m$ . Commonly used units: $μ m$ , $mm$ .

Source:
PAC, 2021, 93, 647. (Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)) on page 669 [Terms] [Paper]

Citation: 'path-length' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.08278 RIS BibTex EndNote

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Version 3.0.1 (6776 Terms)

path-length symbols: $l$ , $s$ , units: $m$ , $μ m$ , $mm$ , $cm$

Alphabetical Index

Additional Indexes

Version 3.0.1 (6776 Terms)

path-length symbols: l, s, units: m, μμm, mm, cm

path-length symbols: $l$ , $s$ , units: $m$ , $μ m$ , $mm$ , $cm$