PREPARATION AND CONTRAST OF INDICATOR PAPER TO VIOLET METHYL.
Edition 1954-04-15

Water quality. Iodide determinarion. Colorimetric method with leuco violet glass.
Edition 2002-02-28

Aerospace series - Cable ties for harnesses - Test methods - Part 307: Resistance to ultra violet radiation (Endorsed by AENOR in April of 2007.)
Edition 2007-04-01

Water quality - Determination of aluminium - Spectrometric method using pyrocatechol violet
Edition 2018-03-21

Composite Insulators Guy (Strain) Insulator Type (Ultra-Violet Light Resistant Polymer Material Covered Rod Type)
Edition 2019

Water quality - Determination of aluminium - Spectrometric method using pyrocatechol violet
Edition 1994-12

Aerospace series - Cable ties for harnesses - Test methods - Part 307: Resistance to ultra violet radiation; German and English version EN 4057-307:2006
Edition 2008-02

Textiles - Determination of dyes after methanol extraction
Edition 2022-09

Pigments, dyestuffs and extenders - Terminology - Part 2: Classification of colouring materials according to colouristic and chemical aspects (ISO 18451-2:2018); German and English version EN ISO 18451-2:2018
Edition 2018-12

Identification Colour Code for Heating System Pipelines
Edition 1942-12