Higher alcohols for industrial use — Methods of test — Part 8: Sulphuric acid colour test
Relates to C6 to C13 alcohols. The principle consists in treatment of a test portion with sulphuric acid solution, under specified conditions, and comparison of the colour developed with that of the same volume of an agreed colour standard. The colour developed may be measured in Hazen units. ISO 1843/8 cancels and replaces ISO Recommendation R 1852-1970, of which it constitutes a technical…
Procedure for Performing a Survey of Sound Due to Industrial, Institutional, or Commercial Activitie...
1. Scope
1.1 This Standard describes a procedure for the measurement of A-weighted sound levels in and around industrial, institutional, or commercial sites.
1.2 This Standard applies to the measurement of sounds that are essentially non-impulsive in nature.
1.3 This Standard may be used to determine:
(a) Those operating areas where permitted sound levels are exceeded;
(…
1. Scope
1.1 This Standard sets forth the requirements for the construction, test, and
operation of permanently or cord-connected 120 V ac detertors and 12 V dc
deterctors, intended for use in the home and in recreational vehicles, for the
detection of fuel gases (natural gas, methane, and propane), in accordance with
the Canadian Electrical Code, Part I. No other function is implied or…
