Kemesta

 

This document specifies a general method for determining the residue on a sieve from a sample of pigment or extender dispersed in water, using a mechanical flushing procedure. This method can also be applied to the examination of other powders or granules which are insoluble in water. It is not applicable to hydrophobic pigments and extenders.

 

This document specifies the requirements for periodic inspection and testing to verify the integrity of cylinders and tubes to be re-introduced into service for a further period of time. This document is applicable to seamless steel and seamless aluminium-alloy transportable gas cylinders (single or those that comprise a bundle) intended for compressed and liquefied gases under pressure, of water capacity from 0,5 l up to 150 l and to seamless steel and seamless aluminium-alloy transportable gas tubes (single or those that comprise a bundle) intended for compressed and liquefied gases under pressure, of water capacity greater than 150 l. It also applies, as far as practical, to cylinders of less than 0,5 l water capacity. This document does not apply to the periodic inspection and maintenance of acetylene cylinders or to the periodic inspection and testing of composite cylinders. NOTE Unless noted by exception, the use of the word "cylinder" in this document refers to both cylinders and tubes.

 

This document specifies the requirements for periodic inspection and testing to verify the integrity of cylinders and tubes to be re-introduced into service for a further period of time. This document is applicable to seamless steel and seamless aluminium-alloy transportable gas cylinders intended for compressed and liquefied gases under pressure, of water capacity from 0,5 l up to 150 l and to seamless steel and seamless aluminium-alloy transportable gas tubes intended for compressed and liquefied gases under pressure, of water capacity greater than 150 l. It also applies, as far as practical, to cylinders of less than 0,5 l water capacity. This document does not apply to the periodic inspection and maintenance of acetylene cylinders or to the periodic inspection and testing of composite cylinders. NOTE Unless noted by exception, the use of the word “cylinder” in this document refers to both cylinders and tubes.

 

This document specifies an oven-drying method for the determination of the moisture content of a lot of paper and board. The procedure in Clause 8, describing how the test pieces are drawn from the lot, is performed at the time of sampling. This document is applicable to every type of lot of paper and board, including corrugated board and solid board, provided that the paper or board does not contain any substances, other than water, that are volatile at the temperature specified in this document. NOTE For determination of the dry matter content of a sample of paper or board, e.g. for calculation of the dry mass of the sample, ISO 638[1] can be used.

 

ISO 287:2017 specifies an oven-drying method for the determination of the moisture content of a lot of paper and board. The procedure in Clause 8, describing how the test pieces are drawn from the lot, is performed at the time of sampling. ISO 287:2017 is applicable to every type of lot of paper and board, including corrugated board and solid board, provided that the paper or board does not contain any substances, other than water, that are volatile at the temperature specified in this document. NOTE For determination of the dry matter content of a sample of paper or board, e.g. for calculation of the dry mass of the sample, ISO 638[1] can be used.

 

This test method defines test terms and specifies a standard method for evaluating the homogeneity of electrically conductive spread carbon fibre tow using eddy current measurement. The impedance in the width direction of the fibre is measured continuously, and the standard deviation of the measured impedance determines the homogeneity of the conductive material in fibre form.

 

This document establishes a classification of wood adhesives for non-structural applications for exterior use without protection by an adequate surface coating. This document specifies performance requirements and durability classes of such adhesives for use in an environment corresponding to the defined conditions. The performance requirements of this document apply to the adhesive only, not to wooden products. This document is primarily intended to assess the performance of adhesives. The requirements apply to the type testing of the adhesives. Production control activities are outside the scope of this document. NOTE For the assessment of end product bonding quality, see Annex A.

 

This document specifies a method for determining the hydrophobicity of surface treated precipitated and fumed silica.

 

This International Standard specifies a gas-Liquid chromatography (GLC) method for the determination of the mean relative molecular mass of technical straight-chain sodium alkylbenzenesulfonates.

 

This document specifies a test method for the simultaneous determination of primary aromatic amines (PAAs) in organic pigments using external reference standards. The separation, identification and quantification of PAAs are achieved by high-performance liquid chromatography (HPLC) analysis with gradient elution and diode array detection (DAD) and/or mass spectrometry detection (MSD) after an extraction step. This analytical procedure can be applied to all organic pigments. The method allows the determination of extractable PAA content including sulfonated PAAs.

 

This document specifies the characteristics and corresponding test methods for additive post treated and (polymer, silica) encapsulated aluminium pigments or combinations of both, suitable for use in paints.

 

This International Standard specifies methods for the measurement of the acidity of aromatic isocyanates and prepolymers used as polyurethane raw materials. Method A is a straightforward titration without a blank and is primarily applicable to products derived from crude or modified methylene-bis-(4-phenylisocyanate), polymethylene polyphenylisocyanates and toluene diisocyanate having moderate to high (> 100 µg/g ) levels of acidity. Method B is applicable to refined, crude or modified isocyanates derived from methylene-bis-(4-phenylisocyanate), polymethylene polyphenylisocyanate and toluene diisocyanate having low (< 100 µg/g ) levels of acidity, and a blank is employed. These methods can also be used for isomeric mixtures of toluene diisocyanate, methylene-bis-(4-phenylisocyanate) and polymethylene polyphenylisocyanate. Other aromatic isocyanates may be analysed by this method if precautions are taken to verify suitability.

 

This document specifies two methods for determining the gas-transmission rate of single-layer plastic film or sheet and multi-layer structures under a differential pressure. One method uses a pressure sensor, the other a gas chromatograph, to measure the amount of gas which permeates through a test specimen.

 

This document specifies the determination of total luminous transmittance and total luminous reflectance on clear, translucent or opaque plastics. Specimen shapes include moulded plaque or discs, films and sheets. Fluorescent plastics and chromatic colour plastics are not covered by this document. NOTE The scope of ISO 13468-1 [1]shows that ISO 13468-1 [1] covers planar transparent and substantially colourless plastics. The method in this document provide the way to trap diffused light and covers to measure translucent and opaque plastics.

 

This document describes procedures for the determination of particle size distribution of kraft, soda, and hydrolysis lignin. The method is applicable to lignin isolated from a kraft pulping process, a soda pulping process, or lignin obtained by hydrolysis of biomass.

 

This document provides users with a basic understanding of the general minimum requirements for the available certificates, knowledge, skill level and competencies for persons operational in the field of inspection of paint, coatings, varnishes and related products on various substrates where the proper application and inspection is fundamental for the life expectancy of the paint and coating system, conformity to specifications and safety.

 

This document specifies an immersion method for determining the water resistance of the glue bond of corrugated fibreboard. This method is applicable to all types of corrugated fibreboard and in particular to corrugated fibreboards in which a high degree of resistance to wet conditions is required.

 

This document specifies a method for determining the dynamic surface tension of liquids based on the pressure in gas bubbles. The dynamic surface tension of solutions is influenced by surface-active molecules in the solution (often surfactants in water-based solutions). The surface tension is measured at a newly created interface depending on the age of this surface. This allows direct conclusions to be drawn about how quickly and strongly the surfactants in the solution reduce the surface tension of a new surface. The interface used to determine surface tension is renewed with each gas bubble. Due to the principle, very short measurement times in the millisecond range are possible, which makes the test method particularly suitable for surfactant-containing solutions of high concentration (significantly above the critical micelle concentration), e.g. in electroplating baths, cleaning baths, preferably low-viscosity Newtonian paints, inks. The sequence of air bubbles resulting from a gas volume flow enables continuous measurement without the sample having to flow through the measuring system. For the purpose of controlling surfactant concentration, surface tension is monitored at an appropriate, well-defined surface age.

 

This International Standard specifies a method of obtaining a representative sample from a lot of paper or board, including solid and corrugated fibreboard (see ISO 4046), for testing to determine whether or not its average quality complies with set specifications. It defines the conditions which apply when sampling is carried out to resolve disputes between buyer and seller relating to a defined lot of paper or board, which has been or is being delivered. Note 1 If less than 50 % of the lot is available for sampling, then sampling in terms of this International Standard will be invalid in the absence of agreement to the contrary. The method is unsuitable for determining the variability within a lot. In cases where International Standards make reference to sampling according to this standard but where such sampling is impossible, impractical or inappropriate, and where no dispute is involved, guidance is given in normative Annex A. Note 2 Information on the preparation of test pieces is given in the appropriate International Standards.

 

The work item aims to differentiate between biodegradable and non-biodegradable plastic materials. Non-biodegradable plastics are defined as those plastics which do not biodegrade, even in conditions which are conducive to the process. In contrast, the biodegradation of biodegradable plastics occurs when they come into contact with active microorganisms, under conditions that are conducive to biodegradation. This process is analogous to the biodegradation of natural polymers. The plastic materials that are categorised as being intrinsically biodegradable can be utilised in the design of products with a high risk of dispersion. The test scheme is not intended to be applicable to any specific application. Instead, the objective is to develop a framework methodology that can be utilised across diverse industrial sectors for the identification of biodegradable plastics, with the subsequent application of these plastics in the manufacture of various products and for different purposes. The work item does not intend to characterise and evaluate the environmental impact of products containing plastics identified as biodegradable. The test scheme should address the definition of intrinsic biodegradability of plastic materials, without determining the hazard potential of the products, which necessitates a distinct assessment that extends beyond the scope of this particular work item. The rate of biodegradation of a plastic object is not the focus of this particular work item, as it is contingent on environmental conditions. The test scheme to be developed will not be sufficient to carry out an analysis of the ecological risk associated with the dispersal of products, as this requires an assessment of the intrinsic hazard, of the environmental fate, in addition to the assessment of biodegradability.