Potassium sulphate for industrial use — Determination of potassium content — Flame emission spectrop...
The principle of the method consists in dissolution of a test portion previosly ground and sifted. Acidification to pH 1 after suitable dilution and atomization of the resultant solution in the burner of a flame spectrophotometer. Determination of the potassium content by measurement of the intensity of the radiation emitted at 766 nm. Comparison with the intensity of standard potassium chloride…
Potassium hydroxide for industrial use — Determination of sodium content — Flame emission spectropho...
The method is applicable to products having sodium contents greater than 0.01 % (m/m). The principle consists in the dissolution of a test portion, followed by acidification to ph value 1. Atomization of the obtained solution in the burner of a flame spectrophotometer. Measurement of the intensity of the radiation emitted at 589 nm; comparison with the intensity obtained for standard sodium…
Paints and varnishes — Bend test (cylindrical mandrel)
Empirial test procedure for assessing the resistance of a single coating or for a multicoat system to cracking and/or detachment from a metal substrate when subjected to bending round a cylindrical mandrel under standard conditions. The method of test specified may be carried out either with a single specified size of mandrel or by repeating the procedure using successively smaller mandrels. Two…
Paints and varnishes — Surface-drying test — Ballotini method
Method of test for the determination of the surface-drying characteristics of a coating material which dries by the action of air or by chemical reaction of its components. The test may be carried out after a specified time or at suitable intervals. The procedure is not intended to apply to stoving products.
Fishing nets — Designation of netting yarns in the Tex System
As a general rule, netting yarns designated by their linear density or their resultant linear density are usually grey yarns without any preparation. Specifies general usage and complete designation and, for particular cases, brief designation. Three examples for designation are covered. - Replaces ISO Recommendation R 858-1968.
Magnesium and magnesium alloys — Determination of manganese — Periodate photometric method (Manganes...
The method is applicable to the determination of manganese content in magnesium and magnesium alloys which do not contain zirconium, rare earths, or thorium. Specifies principle and procedure of the method, the reagents, apparatus, sampling, expression of results and test report.
Aluminium alloys — Determination of copper — Electrolytic method
The method is applicable to the determination of copper content greater than or equal to 0,50 % in aluminium alloys. The method is not completely applicable to alloys containing tin or antimony (see annex A) or bismuth (see annex B), for which it should be modified.
Specifies four series in millimeters and five series in inches of shaft heights, indicating tolerances such as limit deviations and parallelism errors.
Sulphuric acid and oleum for industrial use — Determination of lead content — Dithizone photometric ...
Applicable to the determination of contents exceeding 1 mg/kg. The principle bases on evaporation of the test portion, dissolution in hydrochloric acid and reduction by hydroxylammonium chloride. Formation of complexes of interferring elements with ammonium citrate and potassium cyanide. Extraction of the lead at a pH of between 8.5 and 10 by a solution of dithizone in chloroform. Elimination of…
Vitreous and porcelain enamels for cast iron — Production of specimens for testing
When the loss in the mass per unit area of the enamel coating is to be determined quantitatively, specimens specially produced according to clause 4 shall ge used, as specimens cut from enamelled articles (clause 5) may reduce the accuracy of the test method. Gives shape and dimensions of specimens.
