Kemesta

This document specifies the determination of the molar-mass distribution and the average molar mass values Mn (number average) and Mw (weight average) of polymers that are soluble in water by gel permeation chromatography (GPC).NOTE Also known as size exclusion chromatography (SEC).This method is applicable to neutral polymers and polyanions (e.g. polycarboxylates, polysaccharides, fully hydrolyzed polyvinyl alcohols and high-molecular polyethylene oxides). It is not applicable to polycations [e.g. polyvinylpyrrolidone, polyvinylpyridine, salts of poly(diallyl N,N dimethyl azacyclopentane), chitosan].Despite good solubility in the mobile phase and even though the chromatograms obtained show good repeatability, it is possible that this method cannot be used with certain polymer types because of specific interactions (e.g. adsorption) within the sample/eluent/column system (see also Clause 12).The conditions specified in this document are not applicable to the GPC analysis of polymer samples with Mw values greater than 106 g/mol and/or polymers with elution limits outside the calibration range (see 7.6 and Annex C).This document includes no correction methods (e.g. for the elimination of peak broadening). If absolute molar mass values are required, an absolute method (e.g. membrane osmometry for Mn or light scattering for Mw) can be used.

This document specifies a method for determining the electric charge density of an electro-deposition coating (e coat) for automotive industries and other general industrial applications, e.g. chiller units, consumer products, radiators, aerospace, agriculture.

This document specifies three different methods (Methods A, B and C) for the determination of sulfur present in fertilizers extracts in the form of sulfates. Method A specifies the gravimetric method. Method B specifies the method using inductively coupled plasma optical spectrometry (ICP-OES). Method C specifies the method using ion chromatography (IC).

This document specifies requirements for the test apparatus and test procedure in order to apply oxygen pressure surges consistently to devices being tested for resistance to adiabatic compression and to materials for oxygen compatibility.

This document specifies requirements for the construction, performance and protective packaging of Category F4 fireworks, as listed in EN 16261 1:—1.This document does not apply for articles containing pyrotechnic compositions that include any of the following substances:— arsenic or arsenic compounds;— polychlorobenzenes;— lead or lead compounds;— mercury compounds;— white phosphorus;— picrates or picric acid.In addition, any European regulation regarding forbidden substances is intended to be taken into account.

This document defines various terms relating to the design, construction, performance, labelling and testing of category F4 fireworks.

This document defines the terms and specifies the requirements, means of categorization, test methods, minimum labelling requirements and instructions for use, for ignition devices (except ignition devices for pyrotechnic articles for vehicles) of the following generic types:— igniters;— components for pyrotechnic trains;— pyrotechnic cords and fuses;— delay fuses;— fuzes.NOTE Safety fuses are subject to Directive 2014/28/EU and therefore not considered in this document.This document does not apply for articles containing pyrotechnic compositions that include any of the following substances:— arsenic or arsenic compounds;— polychlorobenzenes;— mercury compounds;— white phosphorus;— picrates or picric acid.

This document specifies test methods for fireworks of category F4.

This document specifies the minimum labelling requirements and the mandatory instructions for use for category F4 fireworks.

This document specifies test methods for assessment of the moisture conditions of any kind of subfloor prior to the installation of levelling compounds and/or floor coverings or parquet floors bonded with adhesives. The methods are independent from subfloor chemical composition or materials and applicable with available equipment.For some highly reactive cement based compositions (e.g. ternary systems) the manufacturer might recommend a specific time when the subfloor is ready to be covered.This document describes the methods in detail and includes a protocol template for documenting the measured values.

This International Standard specifies the determination of mercury in cosmetics by integrated mercury analytical systems. The purpose of this standard is :• Description of the analytical procedure• Validation and characterization of the method by its accuracy profile