Specifies requirements for kernels, obtaained from fruits of Prunus armeniaca Linnaeus, shelled for human consumption. It defines relevant terms, tabulates requirements for grades of kernels, shows special requirements, further instructions for sampling, packing and marking. An annex A provides the determination of damaged kernels etc. An annex B describes the determination of moisture content…
Manganese ores and concentrates — Determination of titanium content — 4,4'-Diantipyrylmethane s...
The method is applicable to products having a titanium content of 0,01 to 0,5 % (m/m). ISO 7723 should be read in conjunction with ISO 4297. Specifies principle, reagents, apparatus, sample, procedure and expression of results.
Definitions of relevant terms. Then requirements for grades, odour, taste, freedom from moulds, insects etc.,extraneous matter, damaged friuts, moisture content; further descsription of sampling, of methods of test (see annexes A and B), of packing and marking.
Decorticated kernels of mahaleb cherries — Specification
Specifies requirements for kernels from Prunus mahaleb Linnaeus, for human consumption. It defines relevant terms, shows special requirements, such as odour, taste, freedom from moulds, insects etc., extraneous matter, moisture content, further it descibes sampling, methods of test, packing and marking. an annex A provides the determination of damaged kernels etc. An annex B describes the…
Fruits, vegetables and derived products — Determination of mercury content — Flameless atomic absorp...
The method consists in decomposing of organic matter in a sulfuric-nitric acid medium, reducing of mercury(II) to metallic mercury by the action of tin(II)chloride, entraining of the mercury vapour by a current of air and determing in an enclosed apparatus.
Manganese ores and concentrates — Determination of nickel content — Dimethylglyoxime spectrometric m...
Two methods are specified. Method A is applicable to products having a nickel content of 0.01 to 1.0 % (m/m), method B is applicable to products having a nickel content of 0.005 to 1.0 % (m/m). Both methods specify principle, reactions (method A only), reagents, apparatus, sample, procedure and expression of results.
Fertilizers — Determination of total nitrogen content — Titrimetric method after distillation
The method consists in reducing of nitrate to ammonia by chromium powder in acid medium, converting of organic and urea nitrogen into ammonium sulfate by digestion with concentrated sulfuric acid in the presence of a catalyst, distilling of the ammonia from an alkaline solution and absorbing in an excess of standard volumetric sodium hydroxide solution. The method is not recommended for materials…
Copper and copper alloys — Determination of phosphorus content — Molybdovanadate spectrometric metho...
The method is applicable to the determination of phosphorus contents between 0.000 5 and 0.5 % (m/m). ISO 4741 specifies principle, reagents, apparatus, procedure, expression of results and test report.
