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1 Scope This European Standard specifies a method for the determination of the content of inorganic sulphate in anionic surface active agents. It can be applied to α-olefin sulphonates and n-olefin sulphonates, alcohol sulphates, alcohol ether sulphates, alkyl benzene sulphonates and other alkyl sulphonates. This method is used also for the determination of inorganic sulphate in alkyl benzene sulphonates or […]

1 Scope This European Standard specifies a method for the determination of the content of free N-(3-dimethylaminopropyl)alkylamides (amidoamine) in alkylamidopropylbetaines, expressed in grams per 100 g of product. This method is applicable in the range between 0,02 g and 1,0 g of amidoamine per 100 g of product. 2 Normative references The following referenced documents are indispensable for the application […]

1 Scope This European Standard describes two methods for determining the thickness of granular materials within a structure. The two methods can be used to provide an indication of the thickness of surfacing material, one using a steel tape, the other using a floating disc and a steel tape. Method 1 is applicable to layers within a profile. Method 2 […]

1 Scope This European Standard specifies a method for the determination of the water content of unbound mineral surfaces used for outdoor sports areas. 2 Principle The mass of a specimen of an unbound mineral is determined under the prevailing conditions. After drying,the mass of the same specimen is determined again. The difference in mass is a measure of the […]

1 Scope This European Standard deals with the requirements and the basic performance criteria and specifies where applicable minimum values for precast foundation elements (comprising columns with integrated foundation elements, pocket foundation elements, sockets) made of reinforced normal weight concrete for structure of buildings according to EN 1992-1-1. This European Standard covers terminology, performance criteria, tolerances, relevant physical properties and […]

1 Scope This European Standard specifies the basic design requirements for the selection of a gas explosion venting protective system. This European Standard, EN 14797 and EN 14460 form a series of three standards which are used together. NOTE 1 These three standards together represent the concept of gas explosion venting. NOTE 2 To avoid transfer of explosions to other […]

This document gives specifications and defines test methods for coal tar fluxing oils. Annex specifies this waming for use for industrial purposes. The main purposes of these oils are to reduce the viscosity of bituminous (carbonaceous) binders used for road construction. They may be used in conjunction with petrochemical feedstocks. 2 Normative references The following referenced documents are indispensable for […]

1 Scope The global description “wall saw and wire saw equipment” contains two differing types of machines for use in the construction industry, and both used to make cuts on walls, ceilings and floors composed of mineral construction materials and/or composite materials. The many different cutting tasks and choice of operating method determine the type of machine to be used […]

3 Test apparatus 3.1 Sample baskets The samples have to be loosely filled into mesh wire baskets of different volumes. The baskets have to be open at the top and closed at the bottom. They consist of a narrow-meshed wire net, made of e.g. stainless steel. The width of the mesh has to be chosen in such a way that […]

1 Scope This European Standard specifies basic methodology used in achieving safety of equipment for intended use in potentially explosive atmospheres. The provisions specified in this European Standard are intended for the designer. It also specifies a strategy for standard makers. This European Standard specifies the procedure and information required to allow ignition risk assessment to be carried out for […]