Sodium hexafluorosilicate for industrial use — Determination of phosphate content — Molybdovanadate ...
Applicable to products having contents, expressed as phosphorus pentoxide, of 0.005 % (m/m) to 0.05 % (m/m). The residue from the determination of the loss of mass according to ISO 5444 is used to prepare the test sample. Dissolution in dilute hydrochloric acid and nitric acid solutions. Formation of the yellow molybdovanadate and spectrophotometric measurement at a wavelength of about 420 nm.…
Condensed phosphates for industrial use (including foodstuffs) — Determination of arsenic content — ...
Applicable to products having As content equal or more than 0.2 mg/kg. Dissolution of a test portion, acidification with hydrochloric acid solution and oxidation with potassium bromide-bromate solution, followed by hydrolysis. Determination in accordance with the general method in ISO 2590, clause 3. Has also been approved by the IUPAC.
Steel products for pressure purposes — Quality requirements — Part 5: Longitudinally welded austenit...
Specifies the quality requirements for tubes which are applied for pressure purposes at room temperatur, at low temperatures (good resistance to brittle fracture at temperatures down to - 195 °C) or at elevated temperatures in cases where the creep properties are not the ruling characteristics for design. Does not cover casing, tubing, drill pipe and linepipe for use by the oil and natural gas…