Kemesta

 

This document specifies a method to measure ice adhesion from artificial ice on test substrates by using a centrifuge. Basic ice types are defined and test parameters for the ice removal are described to achieve reproducibility of test results for ice adhesion measurements for rotor blade coatings. This document does not intend to provide fixed test parameter to account for the diversity of relevant icing scenarios in this field of application. This test method can be used to test the adhesion of dynamic ice on the coating system of a wind turbine rotor blade under operation.

 

This document specifies a method for the determination of di-tert-butyl peroxide (DTBP) and 2, 5-Dimethyl-2, 5-di (tert-butylperoxy) hexane (DBPH) in plastics by using gas chromatography. This document is applicable to the determination of the content of residual peroxides in plastics and their products, which use peroxides as a degradation agent or crosslinking agent during plastics processing, or as an additive during polymerization, thereby remaining in degraded polypropylene, crosslinked polyethylene, polystyrene and other plastics.

 

This document specifies the testing method for evaluating the formaldehyde purification performance of interior wall coatings using the bag method, which mainly includes principles, apparatus, reagents and materials, experimental system validation, formaldehyde concentration analysis, sampling, standard test conditions, test procedures, precision, and test reports. This document is applicable to the measurement and evaluation of formaldehyde purification performance of various types of interior wall coatings. Other indoor decoration materials with formaldehyde purification performance, such as wallpaper, carpets, decorative panels, etc., can also refer to this document. Acetaldehyde, propionaldehyde, butyraldehyde, valeraldehyde, isovaleraldehyde, capronaldehyde, benzaldehyde, 2,5-dimethylbenzaldehyde, o-tolualdehyde, m-tolualdehyde, p-tolualdehyde and other carbonyl compounds can also refer to this document.

 

This International Standard describes methods for the determination of sulfur and chlorine content in solid biofuels and pyrogenic biocarbon and specifies two methods for decomposition of the fuel and different analytical techniques for the quantification of the elements in the decomposition solutions. The determination of other elements such as fluorine and bromine is also possible with the methods in this document, however performance data for these elements are not provided. The use of automatic equipment is also included in this International Standard, provided that a validation is carried out as specified and that the performance characteristics are similar to those of the method described in this International Standard.

 

ISO 16994:2016 describes methods for the determination of the total sulfur and total chlorine content in solid biofuels. It specifies two methods for decomposition of the fuel and different analytical techniques for the quantification of the elements in the decomposition solutions. The use of automatic equipment is also included in ISO 16994:2016, provided that a validation is carried out as specified and that the performance characteristics are similar to those of the method described in ISO 16994:2016.

 

This document specifies a method for the quantitative determination of total uronic acids by High-Performance Anion Exchange Chromatography coupled with Pulsed Amperometric Detection (HPAEC-PAD) after acid hydrolysis of the samples. It provides a single analysis method for determining mannuronic, glucuronic, and guluronic acids in brown seaweed and alginate products.

 

This document specifies a laboratory method for the quantification of phycocyanin content in the genus Arthrospira (Spirulina) by a spectrophotometric method.

 

This European standard specifies a laboratory method for the determination of the carotenoid content in microalgae. The method is based on the development of the chlorophyll a standard, which resulted in prEN 18034. This method has been validated for the microalgae species Nannochloropsis and Phaodactlylum. This standard is only validated for fucoxanthin, beta carotene and lutein content, but could be used for other carotenoids as well. Given small adaptations to be able to measure smaller concentrations, this method could also be used for macro algae. This standard is developed in CEN/TC 454/WG 6 Product test methods.

 

This document specifies a procedure to qualify a preliminary welding procedure specification (pWPS) by welding procedure tests to produce a qualified welding procedure specification (WPS). This document applies to the following thermoplastic welding processes: hot gas welding: round nozzle, speed, wedge; extrusion welding; heated tool welding: butt, socket, wedge. The document applies to the welding of the following products: sheet, pipe (unreinforced, solid wall only); fittings (unreinforced only); lining membrane. This document covers the welding of the following groups of materials: a) for sheets, pipes and fittings: PVC (including all kinds of PVC-U, PVC-C) and ABS; PP; PE; PVDF; ECTFE, PFA and FEP; b) for lining membranes: PVC-P; PE; ECB;PP; c) for pipes and fittings only: PA-U 11 and PA-U 12

 

This document specifies general methods, with suitable test conditions, for the determination of the ash of a range of plastics. The particular conditions chosen can be included in the specifications for the plastic material in question. Particular conditions applicable to poly(alkylene terephthalate) materials, unplasticized cellulose acetate, polyamides and poly(vinyl chloride) plastics, including some specific filled, glass-fibre-reinforced and flame-retarded materials, are specified in ISO 3451-2, ISO 3451-3, ISO 3451-4 and ISO 3451-5.

 

This document specifies general methods, with suitable test conditions, for the determination of the ash of a range of plastics. The particular conditions chosen can be included in the specifications for the plastic material in question. Particular conditions applicable to poly(alkylene terephthalate) materials, unplasticized cellulose acetate, polyamides and poly(vinyl chloride) plastics, including some specific filled, glass-fibre-reinforced and flame-retarded materials, are specified in ISO 3451-2, ISO 3451-3, ISO 3451-4 and ISO 3451-5.

 

This document specifies a method for determining the softening point of resins (including rosin) and can, under user-defined conditions, give results comparable to those obtained by ISO 4625-1 and ISO 4625-2.

 

This document specifies a method for the determination of the mass concentration (µg/g) of tyre and road wear particles (TRWP) in soil or sediment environmental samples. This document establishes principles for soil or sediment sample collection, the generation of pyrolysis fragments from the sample, and the quantification of the generated polymer fragments. The quantified polymer mass is used to calculate the concentration of TRWP in soil or sediment. These quantities are expressed on a TRWP basis, which includes the mass of tyre tread and mass of road wear encrustations, and can also be expressed on a tyre rubber polymer or tyre tread basis.

 

 

This document specifies a general concept for provenance information of biological material and data, organizational roles, and requirements for provenance information management. The provenance information covers any information relevant to the traceability, quality and fitness for purpose of the biological material and data generated throughout the life cycle of the biological material from collection to analysis, including data originating from analytical procedures applied to the biological material and further processing of the data. This document is applicable to organizations, authorities and industries that are: This document is also applicable to providers of services related to provenance information management (e.g., provenance information generation, storage, provision, or validation). Customers, regulatory authorities, organizations and schemes using peer-assessment, accreditation bodies, and others can use this document in confirming or recognizing the competence of the aforementioned parties. This document does not apply to biological material and data used for medical diagnosis, treatment and therapy.

 

This document specifies the methods of preparation of test specimens and the test methods to be used in determining the properties of acrylonitrile-butadiene-styrene (ABS) moulding and extrusion materials. Requirements for handling the test material and for conditioning both the test material before moulding and the specimens before testing are given. Procedures and conditions for the preparation of test specimens and procedures for measuring properties of the materials from which these specimens are made are given. Properties and test methods which are suitable and necessary to characterize ABS moulding and extrusion materials are listed. The properties have been selected from the general test methods in ISO 10350-1. Other test methods in wide use for, or of particular significance to, these moulding and extrusion materials are also included in this document, as are the designatory properties specified in ISO 19062-1. In order to obtain reproducible and comparable test results, it is intended to use the methods of specimen preparation and conditioning, the specimen dimensions and the test procedures specified in this document. Values determined will not necessarily be identical to those obtained using specimens of different dimensions or prepared using different procedures.

 

ISO 877-3:2018 specifies a method for exposing plastics to concentrated solar radiation using reflecting concentrators to accelerate the weathering processes. The purpose is to assess property changes produced after specified stages of such exposures. The reflecting concentrators used in these exposures are sometimes referred to as "Fresnel reflectors" because in cross-section the array of mirrors used to concentrate the solar radiation resembles the cross-section of a Fresnel lens. General guidance concerning the scope of the ISO 877 series is given in ISO 877-1. NOTE Additional information about solar concentrating exposures, including a partial list of standards in which they are specified, is given in the Bibliography.

 

This International Standard specifies a titrimetric method, after distillation, for the determination of the ammoniacal nitrogen content of fertilizers. The method is applicable only in the absence of urea or its derivatives, of cyanamide and of organic nitrogenous compounds.

 

This document specifies a method for the determination of the thermal stability at elevated temperature of compounds and products based on vinyl chloride homopolymers and copolymers (in the following text abbreviated as PVC) which undergo dehydrochlorination (the evolution of hydrogen chloride). This document is applicable to the characterization of PVC compounds and products, especially with regard to the effectiveness of their heat-stabilizing systems. It is applicable to coloured PVC compounds and products where a discolouration test under the action of heat may be unsatisfactory. This document is applicable to compounded PVC materials and products. It can be applicable to polymers in powder form under appropriate conditions, to be agreed upon between the interested parties. This document does not apply to PVC compounds in the form of dry blends, since such materials can be not sufficiently homogeneous. This document does not apply to PVC compounds and products which evolve other decomposition products, in addition to hydrogen chloride, at elevated temperatures that can affect the conductivity of water when they are absorbed into it. In this case, a method suitable for the determination of chloride ion (Cl-) in the absorbing solution shall be used (see ISO 182-4[2]). This document can also be applied to other plastics materials which can evolve hydrogen chloride or other hydrogen halides when heated under the conditions prescribed by the relevant specifications, or as agreed upon between the interested parties.

 

Tämä asiakirja käsittelee lääketieteelliseen ja teolliseen käyttöön tarkoitettujen täyttöpaineeltaan alle 300 bar kaasupullojen venttiilien ulostuloliitäntöjä ja täyttöyhteitä. Taulukossa 1 esitetään kaasut, joille venttiilit soveltuvat. Tämä asiakirja sisältää vain ulostuloliitäntöjen ja niihin liittyvien täyttöyhteiden mitoituksen. Tämä asiakirja ei koske nestekaasua, myrkyllisiä, syövyttäviä tai kylmäainekaasuja.