Aluminium ores — Determination of titanium content — 4,4'-Diantipyrylmethane spectrophotometric...
The method is applicable to ores containing between 0,5 and 8 % (m/m) of titanium dioxide. Specifies principle, reagents, apparatus, sampling and samples, procedure, expression of results and test report.
Ammonium bicarbonate (Ammonium hydrogen- carbonate) for industrial use (including foodstuffs) — Dete...
A test portion is dissolved in water and acidified with hydrochloric acid. The carbon dioxide is eliminated by heating the solution. The lead is complexed and extracted with a solution of diethylammonium diethyldithiocarbamate in xylene. The solution is aspirated into an acetylene-air flame. The absorption of the 217 nm line or, alternatively, of the 283.3 nm line emitted by a lead hollow-cathode…
Sockets for wire ropes for general purposes — Part 2: Special requirements for sockets produced by f...
Covers the requirements for materials and methods of manufacture. Details the heat treatment of steel to be used for the manufacture of sockets and indicates its sulfur and phosphorus content. With regard to quality control, reference is made to the requirements specified in ISO 3189-1. Recommends some other tests to be carried out if requested by the purchaser, i.e. the dye penetrant method and…
Copper and copper alloys — Determination of zinc content — Flame atomic absorption spectrometric met...
The method is applicable to the determination of zinc contents between 0.001 and 6 % (m/m). ISO 4740 does not apply to copper alloys containing more than 10 % (m/m) of lead. Specifies principle, reagents, apparatus, sampling, procedure, expression of results and test report.
Milk and milk products — Determination of iron content — Spectrometric method (Reference method)
Is applicable to milk, skimmed milk, whey, buttermilk, plain and skimmed yogurt, evaporated milk, sweetened condensed milk, dried whole and skimmed milk, dried whey and dried buttermilk, cream and butter, butterfat, ice-cream, cheese of various ages and processed cheese, caseins, caseinates and coprecipitates. The principle of determination consists in digesting the organic material with a…
Solid timber in structural sizes — Determination of some physical and mechanical properties
Laboratory methods are specified for determining the modulus of elasticity in static bending, shear modulus, bending strength, modulus of elasticity in tension, tension strength parallel to the grain, modulus of elasticity in compression, compression strength parallel to the grain and dimensions, moisture content, and density. The methods apply to rectangular and square sections of solid…
Aluminium ores — Determination of total silicon content — Combined gravimetric and spectrophotometri...
The method is applicable to ores containing between 1 and 25 % (m/m) silicon dioxide. Specifies principle, reagents, apparatus, sampling and preparation of samples, procedure, expression of results and test report.
Aluminium ores — Determination of iron content — Titrimetric method
The method ist applicable to ores containing between 2 and 50 % (m/m) iron oxide. The method has been chosen to avoid interference from platinum which may occur with the use of platinum crucibles. Specifies principle, reagents, apparatus, sampling and preparation of samples, procedure, expression of results and test report.
Liquefied anhydrous ammonia for industrial use — Determination of oil content — Gravimetric and infr...
A test portion is evaporated at ambient temperature and the oil contained in the residue is extracted with carbon tetrachloride. The oil contained in the residue is determined either gravimetrically by evaporation of the organic solvent and weighing of the residue or by spectrometric measurement of the absorbance of the organic phase at a wavelength of approximately 3.42 m. The gravimetric method…
