Normy

Obsah

ČSN P CEN/TS 17784-2 This document specifies a chromatographic method which allows the identification of heptagluconic acid (HGA) in organo-mineral fertilizers containing heptagluconic acid metal complexes. NOTE - For the complete names of the chelating agents mentioned in this document, see Annex D.

Obsah

ČSN P CEN/TS 17786-1 This document specifies a method for the determination of the chelated iron content and the chelated fraction of iron, in UVCB chelates, EDDHA, EDDHMA, HBED, EDDHSA, in inorganic micronutrient fertilizers by the treatment with a cation exchange resin. The limit of determination of the chelated iron content highly depends on the specific electrical conductivity of the sample, on the amount of nutrient present, and varies between 0,005 % in simple matrices with high amounts of micronutrient and 0,5 % in more complex cases (see 9.1).

Obsah

ČSN P CEN/TS 17786-2 This document specifies a method for the determination of the chelated fraction of micronutrients for fertilizers containing one or many micronutrients chelated by EDTA, DTPA, HEEDTA, IDHA or [S,S]-EDDS in fertilizers. This method is used for inorganic micronutrient fertilizers when micronutrients are chelated only by EDTA, DTPA, HEEDTA, IDHA or [S,S]-EDDS or for mixtures in which EDTA, DTPA, HEEDTA, IDHA or [S,S]-EDDS is one of the chelating agents. The method is applicable to all inorganic micronutrient fertilizers containing EDTA, DTPA, HEEDTA, IDHA or [S,S]-EDDS as chelating agent for contents > 0,1 % (w/w). The method is based on ICP or AAS measurement of the concentration of micronutrients according to EN 16963 or EN 16965 after water extraction according to EN 16962 and LC measurement of the chelating agents according to EN 15950, EN 13368-1 and EN 13368-3.

Obsah

ČSN EN 932-3 Tento dokument určuje základní postup pro identifikaci petrografického typu přírodního kameniva. Platí pro obvyklé požadavky na postup a názvosloví pro zjednodušený petrografický popis. Přesná petrografická identifikace technické mineralogie a petrografie pro stavební inženýrství nebo specifická konečná použití, vyžaduje další zkoumání, a je proto vyloučena z rozsahu tohoto dokumentu. Tento dokument se vztahuje pouze na přírodní kamenivo. Používá se k popisu hornin a sedimentů. Neplatí pro popis a identifikaci umělého nebo recyklovaného kameniva. Informativní příloha A poskytuje návod k petrografickému pojmenování tím, že uvádí definice jednoduchých petrografických termínů, použitelných pro typy hornin používané na kamenivo.

Obsah

ČSN EN 15796 This document is applicable to calcium hypochlorite used directly, or for the production of formulations, for treatment of water for swimming pools. It describes the characteristics of calcium hypochlorite and specifies the requirements and the corresponding test methods for calcium hypochlorite. It gives information on its use in swimming pool water treatment. It also determines the rules relating to safe handling and use of calcium hypochlorite (see Annex B).

Obsah

ČSN EN 15798 This document is applicable to filter media (virgin granular activated carbon, silica sand and silica gravel, pumice, pyrolyzed coal material, anthracite and calcium carbonate) used for filtration of swimming pool water, with or without chemical action. It describes the characteristics of filter media and specifies the requirements and the corresponding test methods for filter media. It gives information on their use in swimming pool water treatment. This document does not concern powdered diatomaceous earth, perlite, zeolite and any other filter media used with filter cartridges or similar filter elements.

Obsah

ČSN EN 15799 This document is applicable to powdered activated carbon used for treatment of swimming pool water. It describes the characteristics of powdered activated carbon and specifies the requirements and the corresponding test methods for powdered activated carbon. It gives information on its use in swimming pool water treatment.

Obsah

ČSN EN 15797 This document is applicable to iron based coagulants (iron (III) chloride, iron (III) chloride sulfate and iron (III) sulfate liquid) used directly or for the production of formulations for treatment of water for swimming pools. It describes the characteristics of iron based coagulants and specifies the requirements and the corresponding test methods for iron based coagulants. It gives information on their use in swimming pool water treatment. General information on iron based coagulants is given in Annex A. It also determines the rules relating to safe handling and use (see Annex B).

Obsah

ČSN ISO 23405 Tento dokument specifikuje základní koncepty, principy a model udržitelného cestovního ruchu. Dokument je použitelný pro soukromé a veřejné organizace a destinace, bez ohledu na jejich velikost a umístění, a další zainteresované strany zapojené do udržitelného rozvoje cestovního ruchu.

Obsah

ČSN EN 17667 This method of test specifies a test method for determining the thermal resistance of textile articles which may be filled, e.g. padded coats and jackets, child sleep bags, cot duvets, etc., or textiles articles with a thermal resistance of up to 0,5 m2K/W (5,0 tog) and/or which do not have uniform thickness. The test method is applicable to products with a thermal resistance within the range 0,025 m2K/W (0,25 tog) to approximately 0,5 m2K/W (5,0 tog) but is limited only by the ability of the test apparatus to cope with the thickness of the test sample.

Obsah

ČSN EN ISO 22683 This document specifies a test method to evaluate the rotational adaptability between an implant body and an implant abutment in a dental implant system. This document is applicable to the implant systems which do not have a friction-fit between implant body and implant abutment but incorporate only an anti-rotational feature between these components. Analog or replica components cannot be used to evaluate the adaptability of dental implant systems.

Obsah

ČSN ISO 24337 Tento dokument určuje zkušební metody ke stanovení rozměrových odchylek mezi prvky laminovaných podlahovin v průmyslově připraveném stálém tvaru (neomezeno), co se týká tloušťky, délky, šířky, pravoúhlosti, přímosti, příčné a podélné rovinnosti, spár mezi sestavenými prvky a výškových rozdílů mezi sestavenými prvky Tyto zkušební metody platí také pro jiné mechanicky sestavené dílce, např. pro modulární vícevrstvé podlahoviny.