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The method specified is based on decomposition of a test portion by fusion with sodium carbonate and subsequent acidification with hydrochloric acid in the presence of boric acid to complex fluoride, formation of the molybdosilicic acid complex and selective reduction to the blue molybdosilicic acid complex with addition of tartaric acid to prevent interference from phosphate, spectrometric…

The method specified is based on dissolution of a test portion by fusion with a mixture of sodium carbonate, boric acid and sodium nitrate and subsequent acidification with nitric acid, formation of the molybdophosphate complex and extraction with a mixture of ethyl acetate and butyl acetate, followed by selective reduction of the complex to molybdenum blue by means of tin(II) chloride added to…

Lays down the material specifications of solid vulcanized rubber sealing rings and specifies requirements for their effect on the organoleptic properties (colour, taste and odour) and the total organic carbon content of water. In the case of composite seals (which comprise, e.g. both rigid and flexible rubbers), applies only to the requirement for their effect on the total organic carbon content…

The principle of the method specified is to decompose a test portion by alkaline fusion and subsequent dissolution of the melt in excess of nitric acid, precipitation of iron(III) phosphate with ammonia solution, dissolution of the precipitate in nitric acid, formation of the molybdophosphate complex and extraction, followed by selective reduction of the complex to molybdenum blue, spectrometric…

The principle of the method is treatment of a test portion with a mixture of dilute hydrochloric acid and an organic solvent, removal of the insoluble fluorspar by filtration under vacuum, separation of the organic phase containing the flotation agent, evaporation of the solvent and weighing of the residue. Applies to materials which have been subjected to flotation process and which have…

Specifies the content, format and recording method of the data blocks forming the helical records of the tape containing video, audio and associated data using the 19 mm type D-2 cassette. In addition, this document specifies the content, format and recording method of the longitudinal record containing tracking information for the scanning head associated with the helical records.

Applies to electrically operated food preparation appliances for household use. States and defines test methods for measuring the functions that can be done by means of household electrical food preparation appliances which are of interest to the user and gives some guidelines for the evaluation of test results. The contents of the corrigendum of July 1993 have been included in this copy.

Defines the requirements and the quality assessment procedure for the sub-family. Type OCCA-PC is a connector set for the male and female configuration. It features a screw-thread coupling mechanism and cylindrical, springloaded butting ferrules. The optical alignment mechanism is of the flexible sleeve style and is self-contained within the female connector. The contents of the corrigendum of…

Defines the requirements and the quality assessment procedure for the sub-family. Type OCCA-BU is a connector set of the male and female configuration. It features a connector set for use in slide-in units with cylindrical, springloaded butting ferrules. The optical alignment mechanism is of the flexible sleeve style and is self-contained within the female connector. The contents of the…

Applies to ID connections which are accessible for tests and measurements, and which are made with: -appropriately designed ID terminations -wires having solid round conductors of 0,25 mm to 3,6 mm nominal diameter -wires having stranded conductors of 0,05 mm2 to 10 mm2 cross-section. The contents of the corrigendum of November 1995 have been included in this copy.