Kemesta

ISO 15604:2016 specifies a method for the determination of any one form of nitrogen in the presence of any other form.The method is applicable to any fertilizer provided for in the Regulation (EC) No 2003/2003, Annex I[2] containing nitrogen in various forms.

ISO 15959:2016 specifies a method for the determination of phosphorus in fertilizer extracts.The method is applicable to all extracts of fertilizers for the determination of the different forms of phosphorus as phosphorus soluble in mineral acids, water soluble phosphorus, phosphorus soluble in solutions of ammonium citrate, phosphorus soluble in 2 % citric acid and phosphorus soluble in 2 % formic acid.

ISO 25475:2016 specifies a method for the determination of the ammoniacal nitrogen content in fertilizers. The method is applicable to all nitrogenous fertilizers including compound fertilizers, in which nitrogen is found exclusively either in the form of ammonium salts or ammonium salts together with nitrates.ISO 25475:2016 is not applicable to fertilizers containing urea, cyanamide or other organic nitrogenous compounds.

ISO 25705:2016 specifies methods for the determination of isobutylidene diurea (IBDU), Crotonylidene diurea (CDU) (method A) and methylene-urea oligomers (MU) (method B) in fertilizers using high-performance liquid chromatography (HPLC).The method is applicable to all fertilizers which do not contain interfering organic compounds.

This document specifies the method of testing the knowledge and skill of a welder who is required to carry out welds on thermoplastics in new constructions and repair work.The skill examination of a welder is an essential condition for the assurance of the quality of the welding work.The application of this document guarantees that the examination is carried out according to a uniform test procedure.This document applies when the contractor or the authorities responsible for the application require it.Gas and water utility network industries with alternative qualification programmes are excluded from this document.This document applies to the following welding processes:- hot gas welding: round nozzle, high speed nozzle, wedge;- extrusion welding;- heated tool welding: butt, saddle, socket, wedge;- electrofusion welding: socket, saddle;- solvent welding: socket.This document applies to the welding of the following products:- sheet;- pipe;- fittings;- lining membrane.This document covers the welding of the following groups of materials:a) for sheets, pipes and fittings:- group 1: PVC (including all kinds of PVC-U, PVC-C) or ABS;- group 2: PP (including all kinds of PP);- group 3: PE (including all kinds of PE);- group 4: PVDF;- group 5: ECTFE or PFA or FEP;b) for lining membranes and flooring:- group 6: PVC-P;- group 7: PE (including all kinds of PE);- group 8: ECB;- group 9: PP.c) for pipes and fittings only:- group 10: PA-U 11 or PA-U 12.

This document specifies a method using a shear test apparatus for measuring the in-plane shear stress/shear strain response, shear modulus and shear strength of continuous-fibre-reinforced plastic composite materials with fibre orientations of 0° and 0°/90°.This method is applicable to thermoset and thermoplastic matrix laminates made from unidirectional layers/non-woven fabrics and/or fabrics including unidirectional fabrics, with the fibres oriented at 0° and 0°/90° to the specimen axis, where the lay-up is symmetrical and balanced about the specimen mid-plane.The method is suitable for determining shear properties in both the linear and nonlinear load-deformation range even at shear strains greater than 5 %.Short and long fibre-reinforced plastic composites can also be tested using this document.

This document specifies a method for the determination of the cold and hot water insoluble nitrogen content in solid urea formaldehyde and methylene urea slow-release fertilizers and for the determination of the hot water soluble nitrogen content in nutrient polymers (see Component Material Category CMC 9 as specified in the Regulation (EC) No xxxx/2019 on Fertilizing Products [1]).