Oil of calamus — Determination of cis-beta-asarone content — Gas chromatographic method on packed co...
A small quantity of the oil is analyzed under specified conditions. The cis-beta-asarone contents is determined by using the internal standard or addition method. As stationary phase polyethylene glycol 20000 is used. Operating temperatures: Oven: isotherm about 190 °C. Injection system and detector: about 170 °C.
Oils of lemon and petitgrain citronnier, and oil of lime obtained by a mechanical process — Determin...
The method consists in analyzing a small quantity of essential oil on a column of small diameter but great length under specified conditions. The citral content is determined by using the internal standard method. Polyethylene glycol 20000 is used as stationary phase. Operating temperatures: Oven: linear temperature programming from 80 to 180 °C at a rate of 2 °C/min. Injection system: about 190…
Oil of rosewood — Determination of alpha-terpineol content — Gas chromatographic method on packed co...
A small quantity of the oil is analyzed by gas chromatography under specified conditions on a packed column. The
alpha
-terpineol content is determined by using the internal standard method. Operating temperatures: Oven: isotherm between 120 and 150 °C. Injection system: about 170 °C. Detector: about 170 °C.
Oil of sandalwood — Determination of santalols content (in the form of their trimethylsilyl derivati...
A small quantity of the oil is analyzed under specified conditions. The santalols content is determined by using the internal standard method after their transformation into the corresponding trimethylsilyl ethers. Polyethylene glycol 20 000 is used as stationary phase.
Reinforced plastics based on unsaturated polyester resins — Determination of residual styrene monome...
The residual styrene monomer content in reinforced plastics based on unsaturated polyester (UP) resins is an important criterion in evaluating the degree of cure of UP resins in the polymerized state. The determination is carried out by extraction of the residual monomer styrene from the UP resin in the polymerized state using dichloromethane and subsequent gaschromatographic analysis of the…
Plastics — Homopolymer and copolymer resins of vinyl chloride — Determination of residual vinyl chlo...
Dissolution or suspension of a test portion in a suitable solvent, for example N,N-demethylacetamide, N,N-dimethylformamide, tetrahydrofurane or dichloroethane, free of any impurity with the same chromatographic retention time as vinyl chloride under the conditions of test. Determination of the vinyl chloride monomer content by gas chromatography using the "head space" sampling method…
Copper alloys — Determination of nickel content — Titrimetric method
The method is applicable to contents of nickel as an alloying element in all types of copper alloys listed in International Standards. ISO 4743 specifies principle, reagents, apparatus, procedure, expression of results and test report.
Guidelines for the presentation of International Standards dealing with the design of structures
The different approaches to the drafting of International Standards resulted in a lack of uniformity in the technical content, and in the layout and sequence of the subject matter, of such documents. This Technical Report has, therefore, been prepared to create guidelines for the presentation of International Standards dealing with the design of structures.
Copper and copper alloys — Determination of tin content — Spectrometric method
The method is applicable to the determination of tin contents between 0.005 and 0.5 % (m/m) in all types of copper and copper alloys listed in International Standards. A method applicable to the determination of tin contents below 0.005 % (m/m) is in preparation. ISO 4751 specifies principle, reagents, apparatus, procedure, preparation of calibration graph, expression of results and test report.
Copper and copper alloys — Determination of chromium content — Flame atomic absorption spectrometric...
The method is applicable to the determination of chromium contents between 0.003 and 2.0 % (m/m). ISO 4744 specifies principle, reagents, apparatus, sampling, procedure, expression of results and test report. An International Standard dealing with the sampling of copper and copper alloys is in preparation.
