Rechercher

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.

Three analytical procedures are given with two supporting sample treatment methodologies: a flame atomic absorption spectroscopy (AAS) method and two potentiometric iodide titration (PT) methods. The choice of treatment is dependent on the analysis method and form of sample. The AAS method allows cyanogen iodide-treated or preserved samples to be analyzed directly, the PT method requires one of…

Establishes criteria for the purity of photographic-grade anhydrous sodium acetate and describes the tests to be used to determine the purity. The test methods are concerned with assay, insoluble matter content, heavy metals content, iron content, halides content, alkalinity, acidity, appearance of solution.

The principle of the method specified is precipitation of the urea with xanthydrol in acetic acid solution, filtration of the dixanthylurea precipitate, drying, and weighing. This method is not applicable to fertilizers containing cyanamide or the condensation products of urea and aldehydes.

The principle of the method specified is treatment of a test portion with hydrochloric acid solution, absorption of the evolved carbon dioxide in barium hydroxide solution, neutralization of excess alkali with hydrochloric acid solution, addition of an exactly measured excess of a standard volumetric hydrochloric acid solution to dissolve the precipitated barium carbonate and back-titration with…

The principle of the method specified is digestion of a test portion in a sealed apparatus in a mixture of hydrochloric acid, tin(II) chloride and boric acid solutions, absorption of the liberated hydrogen sulfide, entrained in a stream of oxygen-free argon or nitrogen, in zinc acetate solution and iodometric determination of the zinc sulfide formed. The method is applicable to products having a…

The method is based on preparation of test samples and heavy metals standard solutions, preconditioning them, addition of sodium sulfide solution (for determination of heavy metals) or 1,10-phenanthroline reagent (for determination of iron), dilution with water, mixing well, transfer to two Nessler colour-comparison cylinders, and comparing the colour of both solutions.