Diffusable Hydrogen in Mild Steel and Low-Alloy Steel Weld Metals: Test
Method
1. Scope
1.1 The purpose of this Standard is to provide a test method for measuring
the content of diffusible hydrogen in deposited weld metal.
Note: In order to obtain the total hydrogen content, it would be
necessary to obtain the residual content by hot extraction at 650°C
under vacuum or using a carrier gas method.
1.2 This assessment shall…
Electromagnetic Interference Measuring Instrument - C.I.S.P.R. Type
1. Scope
1.1 This Standard sets forth the characteristics of an instrument conforming to C.I.S.P.R. requirements for the measurement of electromagnetic interference, both conducted and radiated, in the frequency range 0.15 MHz - 1000 MHz, as set for th in related CSA Standards on Tolerable Limits of Electromagnetic Interference. The frequency range, methods of use, and tolerable limits are…
Surface active agents — Determination of free alkalinity or free acidity — Titrimetric method
The determination is carried out in the following way: Titration of an ethanolic or propanolic solution of the product with a standard volumetric potassium hydroxide or hydrochloric acid or sulphuric acid solution whichever is appropriate, in the presence of phenolphthalein as indicator.
Surface active agents — Determination of alkalinity — Titrimetric method
A clear solution of the substance is titrated with a standard volumetric hydrochloric acid solution, in the presence of methyl orange or bromophenol blue as indicator. This method is only applicable when so indicated in the specific standard for each product; in particular, it is not suitable for products containing soaps.
Formic acid for industrial use — methods of test — Part 7: Determination of low contents of other vo...
The principle consists in a decomposition of most of the formic acid in a test portion by sulphuric acid an of the remainder by chromic acid. Steam distillation of acetic acid and/or other volatile acids and titration of the distillate with standard volumetric sodium hydroxide solution in the presence of phenolphthalein as indicator. The method is applicable to products containing less than 0,5…
Formic acid for industrial use — Methods of test — Part 2: Determination of total acidity — Titrimet...
The principle consists in a titration of a test portion with a standard volumetric sodium hydroxide solution, using phenolphthalein as indicator. ISO/R 731 has been subdivised into seven parts. ISO 731/2 replaces clause 3 of ISO Recommendation R 731-1968.
Formic acid for industrial use — Methods of test — Part 3: Determination of content of other acids —...
The principle consists in a quantitative oxidation of the formic acid in a test portion with excess mercury(II) oxide. Potentiometric titration of the residual acids with standard volumetric sodium hydroxide solution. The method is applicable to products containing 0,5 to 6,0 % (m/m) of other acids, expressed as acetic acid. ISO/R 731 has been subdivised into seven parts. ISO 731/3 replaces…
Formic acid for industrial use — Methods of test — Part 4: Visual limit test for inorganic chlorides
Applicable to products having inorganic chlorides contents in the range 0,0005 to 0,5 % (m/m). Comparison of the turbidity, obtained by the addition of silver nitrate to a solution prepared from a test portion, with that similarly obtained from a standard chloride solution.
Formic acid for industrial use — Methods of test — Part 5: Visual limit test for inorganic sulphates
The principle consists in a comparison of the turbidity, obtained by the addition of barium chloride to a solution prepared from a test portion in the presence of hydrochloric acid, with that similarly obtained from a standard sulphate solution. The method is a applicable to products having inorganic sulphates contents, expressed as sulphate (SO42-), in the range 0,001 to 0,1 % (m/m).
