Leather — Chemical determination of chromium(VI) content in leather — Part 1: Colorimetric method
ISO 17075-1:2017 specifies a method for determining chromium(VI) in solutions leached from leather under defined conditions. The method described is suitable to quantify the chromium(VI) content in leathers down to 3 mg/kg.
ISO 17075-1:2017 is applicable to all leather types.
The results obtained from this method are strictly dependent on the extraction conditions. Results obtained by using other…
Animal and vegetable fats and oils — Determination of water content — Karl Fischer method (pyridine...
ISO 8534:2017 specifies a method for the determination of the water content of animal and vegetable fats and oils (hereinafter referred to as fats) using Karl Fischer apparatus and a reagent which is free of pyridine.
Milk and milk products (or fat coming from milk and milk products) are excluded from the scope of this document.
Animal and vegetable fats and oils — Determination of peroxide value — Iodometric (visual) endpoint ...
ISO 3960:2017 specifies a method for the iodometric determination of the peroxide value of animal and vegetable fats and oils with a visual endpoint detection. The peroxide value is a measure of the amount of oxygen chemically bound to an oil or fat as peroxides, particularly hydroperoxides.
The method is applicable to all animal and vegetable fats and oils, fatty acids and their mixtures with…
Animal and vegetable fats and oils — Determination of insoluble impurities content
ISO 663:2017 specifies a method for the determination of the insoluble impurities content of animal and vegetable fats and oils.
If it is not desired to include soaps (particularly calcium soaps) or oxidized fatty acids in the insoluble impurities content, it is necessary to use a different solvent and procedure. In this case, an agreement is to be reached between the parties concerned.
Milk and…
Electricity metering (AC) - Tariff and load control - Part 21: Particular requirements for time swit...
IEC 62054-21:2004+A1:2017 specifies particular requirements for the type test of newly manufactured indoor time switches with operation reserve that are used to control electrical loads, multi-tariff registers and maximum demand devices of electricity metering equipment. This publication is of high relevance for Smart Grid. This consolidated version consists of the first edition (2004) and its…
Household and similar electrical appliances - Safety - Part 2-53: Particular requirements for sauna ...
IEC 60335-2-53:2011+A1:2017 deals with the safety of electric sauna heating appliances and infrared emitting units having a rated power input not exceeding 20 kW, their rated voltage being not more than 250 V for single-phase appliances and 480 V for other appliances. The appliances covered by this standard are intended for use in the home and in public saunas located in blocks of flats, hotels…
IEC 60238:2016+A1:2017 applies to lampholders with Edison thread E14, E27 and E40, designed for connection to the supply of lamps and semi-luminaires only. It also applies to switched-lampholders for use in AC circuits only, where the working voltage does not exceed 250 V r.m.s. This ninth edition cancels and replaces the eighth edition published in 2004, Amendment 1: 2008 and Amendment 2:2011.…
IEC TS 60076-20:2017(E) is applicable to transformers in the scope of IEC 60076-1. It proposes two methods of defining an energy efficiency index and introduces three methods of evaluating the energy performance of a transformer. The appropriate method is chosen by agreement between purchasers and manufacturers or according to local regulations.
The contents of the corrigendum of January 2018…
