TS ISO 78-3

TS ISO 78-3 is a layout standard for how standard analytical methods based on molecular absorption spectrometry should be structured and worded. In chemistry, it supports consistent presentation of methods used for measurements on solutions in the visible and near-ultraviolet regions.

What the layout standard is for

This type of standard is about document structure rather than the measurement procedure itself. Molecular absorption spectrometry relies on the absorption of light by molecules at selected wavelengths, with results commonly interpreted through the relationship between absorbance and analyte concentration. The purpose here is to harmonise how methods using this analytical principle are organised, titled, and phrased in standard documents.

Technical scope in context

The stated scope covers standard methods of analysis for solutions examined in the visible and near-ultraviolet regions. In practical terms, that points to solution-phase measurements rather than solid-sample techniques. In general technical use, such methods involve wavelength selection, sample preparation, measurement conditions, and result reporting. The role of this standard, however, is to provide a common editorial framework for those methods, not to prescribe a specific analytical procedure.

This record represents a TSE edition based on ISO 78-3:1983 and now withdrawn. It remains useful for understanding the terminology and document-structuring conventions used in chemical analysis standards.