Water quality — Determination of calcium and magnesium — Atomic absorption spectrometric method
The procedure is intended for the analysis of raw and drinking waters and can be used for waters having a calcium content of up to 50 mg/l and a magnesium content of up to 5 mg/l. For samples containing higher concentrations of calcium or magnesium a smaller volume of the sample must be taken for the analysis.
Fruits, vegetables and derived products — Determination of zinc content — Part 1: Polarographic meth...
The method consists in ashing of a test portion in a muffle furnace at 525+25 C, treating the ash obtained with hydrochloric acid, neutralizing with ammonia solution and determing of the value using an ammonia/ammonium chloride electrolyte. Copper, tin, lead and cadmium do not interfere.
Aluminium ores — Determination of phosphorus content — Molybdenum blue spectrophotometric method
The method is applicable to materials having phosphorus contents, expressed as diphosphorus pentoxide between 0,01 and 5 % (m/m). The arsenic content of the sample does not affect the determination. Specifies principle, reagents, apparatus, sampling and samples, procedure, expression of results and test report. An annex shows the flowsheet of the procedure for the acceptance of test results.
The method is applicable to products having aluminium contents, expressed as aluminium oxide, in the range 30 to 65 % (m/m). Specifies principle, reagents, apparatus, sampling and samples, procedure, expression of results and test report.
The method can be applied to samples containing hydroquinone in the concentration range of 200 to 4000 g/l. Aminophenols and phenylenediamines should also be determined by this method.
Identification of Medical Gas Containers, Pipelines and Valves
Specifies the code for the ready identification of the contents
of portable medical gas containers and pipelines by name, symbols
and colours, and for the ready identification of valve outlets by
a non-interchangeable system. Colour coding requirements do not
apply to liquid oxygen systems for home care use or bulk gas
carriers and/or containers.
Cranes and lifting appliances — Technical characteristics and acceptance documents
Establishes the form of presentation and content of the documents which a manufacturer should provide with the equipment. Documents give technical information and include acceptance documents for the equipment to facilitate its installation, testing and use. Specimen acceptance documents are given in the annex. Applies to all types defined in ISO 4306-1.
Soils - Moisture-Density Relations Standard Proctor Test
The present standard describes the methods of determining the relation between
the moisture content and the density of soils and soil aggregates when these
are compacted in standard moulds using 2,49 kg rammers dropped a height of 305
mm. Four methods are described herein.
NOTE 1 - The laboratory compaction tests described in this standard generally
provide good measures of optimum…
Oils of sassafras and nutmeg — Determination of safrole and cis- and trans-isosafrole content — Gas ...
A small quantity of the oils is analyzed by gas chromatography under specified conditions on a packed column. The safrole and cis- and trans-isosafrole contents are determined by using the internal standard method. As stationary phase are used polydimethylsiloxane, or polyethylene glycol 20000. Operating temperatures: Oven: isotherm about 100 °C when using polydimethylsiloxane; isotherm about 125…
