Acetic acid for industrial use — Methods of test — Part 10: Visual limit test for heavy metals (incl...
The principle consists in conversion of heavy metals, such as lead, copper and iron, to their sulphides by treatment with sodium sulphide in ammoniacal solution, and visual comparison of the colour produced with that of a standard lead solution similarly treated. The method detects only the heavy metals present in non-complex form. Using a test portion of 25 g, the method is applicable directly…
Acetic acid for industrial use — Methods of test — Part 1: General
Gives general instructions and also specifies the methods to be used for the determination of dry residue after evaporation on a water bath, for the determination of the crystallizing point (temperature) of glacial acetic acid, for the determination of water content, for the measurement of colour and for the determination of arsenic content. The method is applicable to products having acedic acid…
Acetic acid for industrial use — Method of test — Part 2: Determination of acetic acid content — Tit...
The principle consists in titration of a test portion with standard volumetric sodium hydroxide solution, using phenolphthalein as indicator. Calculation of the acid content, making allowance for any formic acid present, determined separately (see ISO 753/3). This International Standard has also been approved by the International Union of Pure and Applied Chemistry (IUPAC). International…
Butan-1-ol for industrial use — Methods of test — Part 1: General
Gives general instructions ans also specifies the methods to be used for the determination of density at 20 C, the determination of aldehydes and ketones content, the determination of destillation yield, the determination of dry residue after evaporation on the water bath, the determination of bromine number, the measurement of colour and the determination of water content. International…
Light metals and their alloys — Code of designation based on chemical symbols
The designations of metals and alloys shall be based on the chemical composition limits given in International Standards. International chemical symbols shall be used for the designation of the principal metal and the major alloying elements followed by numbers indicating the metal grade or the nominal alloy content.
Standard Test Methods for Mat-Formed Wood Particleboards and Waferboard
This standard is one of the CAN3-O188 Series of Standards on
Particleboard and Waferboard. It describes the test procedures
for determining dimensional tolerances, density and moisture
content, static bending strength, internal bond strength,
hardness, screw-holding strength, linear expansion and nail
withdrawal resistance of particleboard and waferboard.
Additionally this standard…
Zinc alloys — Determination of copper content — Electrolytic method
The method is applicable to zinc alloy Zn Al 4 Cu 1. It is suitable for the determination of copper contents between 0,5 and 3,5 %. This International Standard specifies principle, reagents, apparatus, sampling, procedure, expression of results and test report.
Brown coals and lignites — Classification by types on the basis of total moisture content and tar yi...
Brown coals are classified in this International Standard according to the following properties: total moisture content calculated on the ash-free basis; tar hiels calculated on the dry, ash-free basis. In tables class numbers, group number and code numbers of brown coal types are given.
Copper and copper alloys — Determination of manganese — Spectrophotometric method
The method is applicable to copper and all copper alloys, bronzes, brasses, copper-nickels and copper-aluminiums having manganese contents equal to or less than 6 %, which can be attacked under the conditions given in this International Standard. ISO 2543 specifies principle, reagents, apparatus, sampling, procedure, expression of results and test report.
Systems and software engineering — Requirements for acquirers and suppliers of information products ...
This document supports the interest of system users in having consistent, complete, accurate, and usable information. It addresses both available approaches to standardization: a) process standards, which specify the way that information products are to be acquired and supplied; and b) information product standards, which specify the characteristics and functional requirements of the information…
