Steel and iron — Determination of nitrogen content — Titrimetric method after distillation
The principle of the method specified is dissolving a test portion in hydrochloric acid followed by oxidation with hydrogen peroxide, fuming of the acid-insoluble residue in sulfuric acid with potassium sulfate and copper(II) sulfate, distilling the solution made alkaline with sodium hydroxide, collecting ammonia in a receiver containing orthoboric acid solution, titration of the ammonium ion…
Apple juice, apple juice concentrates and drinks containing apple juice — Determination of patulin c...
The principle of the method specified is extraction of patulin from a test portion using ethyl acetate followed by partitioning of the extract with aqueous sodium carbonate solution, qualitative and quantitative determination of the patulin content by means of high-performance liquid chromatography using an ultraviolet detector. The limit of detection is 10 µg/l, based on 5 ml of ready-to-drink…
Apple juice, apple juice concentrates and drinks containing apple juice — Determination of patulin c...
The principle of the method specified is extraction of patulin in a mixture of ethyl acetate and chloroform (3:2 by volume), filtration of the extract on a silica-gel column and qualitative and quantitative determination by means of two-directional thin-layer chromatography. The spots are developed using a 3-methyl-2-benzothiazoline hydrazone (MBTH) hydrochloride solution. The limit of detection…
Safety of household and similar electrical appliances - Part 2: Particular requirements for electric...
Deals with the safety of electric dry irons and steam irons, including those with a separate water reservoir or boiler having a capacitiy not exceeding 5 l, for household and similar purposes, their rated voltage being not more than 250 V. The contents of the interpretation sheet of June 1996 have been included in this copy.
Safety of household and similar electrical appliances - Part 2: Particular requirements for toasters...
Deals with the safety of portable electric appliances with a cooking function such as baking, roasting and grilling, whose rated voltage is more than 250 V. The contents of the corrigendum of December 1997 have been included in this copy.
Environmental testing - Part 2: Test methods - Test Fh: Vibration, broad-band random (digital contro...
Determines the ability to withstand specified severities of broad-band random vibration. Applies to specimens which may be subjected to vibration of a stochastic nature by transportation or operational environments, for example in aircraft, space vehicles and land vehicles.
Has the status of a basic safety publication in accordance with IEC Guide 104.
The contents of the corrigendum of October…
Determination of isotopic content and concentration of uranium and plutonium in nitric acid solution...
The method is based on isotope ratio measurements in solutions by thermal ionization mass spectrometry. Includes the following steps: dilution, spike addition, isotope exchange chemistry, ion exchange purification/separation, preparation of filaments, mass spectrometric measurements and calculation of isotopic and elemental concentrations. Pu 238 is determined by means of alpha spectrometry if…
Plastics — Reinforced moulding compounds and prepregs — Determination of apparent volatile-matter co...
The apparent volatile-matter content is the percentage of matter lost on heating, relative to the initial mass, The principle of the method specified is obtaining it by measuring the change in mass of a test specimen when heated in an air-ventilated oven at a specified temperature for a specified length of time. The method is applicable to all unidirectional and multidirectional fibre-reinforced…
