Normy

Obsah

ČSN EN ISO 12625-17 This document specifies a method to assess the disintegration of tissue paper and tissue products when subjected to mechanical agitation in water.

Obsah

ČSN EN 17203 This document describes a procedure for the determination of the citrinin content in food (cereals, red yeast rice (RYR)), herbs and food supplements by liquid chromatography tandem mass spectrometry (LC-MS/MS). This method has been validated for citrinin in red yeast rice and in the formulated food supplements in the range of 2,5 µg/kg to 3 000 µg/kg and in wheat flour in the range of 2,5 µg/kg to 100 µg/kg. Laboratory experiences have shown that this method is also applicable to white rice, herbs such as a powder of ginkgo biloba leaves and the formulated food supplements in the range of 2,5 µg/kg to 50 µg/kg.

Obsah

ČSN EN ISO 23036-2 This document specifies a method for the detection of Anisakidae L3 larvae commonly found in marine and anadromous fishes. The method is applicable to fresh fish and/or frozen fish, as well as lightly processed fish products, such as marinated, salted or smoked. It is also suitable for visceral organs as a confirmatory method for a visual inspection scheme. The artificial digestion method[4][5][6] is applicable to quantifying parasitic infections by estimating the number of parasites in the fish musculature and, when applied to fresh fish or lightly processed fish products (never frozen before processing), determining the viability of Anisakidae L3, which can be present. This method does not apply to determining the species or genotype of detected parasites. Final identification is made by morphological and/or molecular methods.

Obsah

ČSN EN ISO 23036-1 This document specifies a method for the detection of Anisakidae L3 larvae commonly found in marine and anadromous fishes. The method is applicable to fresh fish and/or frozen fish, as well as lightly processed fish products, such as marinated, salted or smoked. It is also suitable for visceral organs as a confirmatory method for a visual inspection scheme. The artificial digestion method is applicable to quantifying parasitic infections by estimating the number of parasites in the fish musculature and, when applied to fresh fish or lightly processed fish products (never frozen before processing), determining the viability of Anisakidae L3, which can be present. This method does not apply to determining the species or genotype of detected parasites. Final identification is made by morphological and/or molecular methods.

Obsah

ČSN EN ISO 14501 This document specifies a method for the determination of aflatoxin M1 content in milk and milk powder. The lowest level of validation is 0,08 µg/kg for whole milk powder, i.e. 0,008 µg/l for reconstituted liquid milk. The limit of detection (LOD) is 0,05 µg/kg for milk powder and 0,005 µg/kg for liquid milk. The limit of quantification (LOQ) is 0,1 µg/kg for milk powder and 0,01 µg/kg for liquid milk. The method is also applicable to low-fat milk, skimmed milk, low-fat milk powder and skimmed milk powder.

Obsah

ČSN EN ISO 16929 This document defines a test method used to determine the degree of disintegration of plastic materials in a pilot-scale aerobic composting test under defined conditions. It forms part of an overall scheme for the evaluation of the industrial compostability of plastics as outlined in ISO 17088. The test method laid down in this document is also used to determine the influence of the test material on the composting process and the quality of the compost obtained. This test method cannot be used to determine the aerobic biodegradability of a test material. NOTE - Other methods are available for this test (for example, see ISO 14851, ISO 14852 or ISO 14855-1 and ISO 14855-2).

Obsah

ČSN EN 14730-2 This document specifies requirements for the: - approval of training facilities, testing and maintaining the skills of aluminothermic welders and welding trainers. It applies to those aluminothermic welding processes compliant with the requirements of EN 14730-1. It requires that the system for training and testing of welders be approved by the railway authority; - approval of aluminothermic welding contractors. It applies to those contractors using aluminothermic welding processes compliant with the requirements of EN 14730-1 and who employ welders in the possession of a valid permit to weld as defined in Clause 4 of this document; - acceptance of the final aluminothermic weld inspections and aluminothermic weld inspectors approved by the railway authority. It does not cover any previous weld inspections by the welder or others. This document also applies to aluminothermic welds produced on railway rails as contained in EN 13674-1 to EN 13674-4 and EN 16771.

Obsah

ČSN 75 5355 Tato norma platí pro navrhování a provoz vodojemů (zemních a věžových), které jsou součástí vodovodů pro veřejnou potřebu a slouží pro zásobování pitnou vodou. Relevantní ustanovení této normy je možné použít i při navrhování a realizaci nádrží jiných typů nebo jiného účelu.

Obsah

ČSN EN 14654-4 Tento dokument stanovuje požadavky na řízení a kontrolu činností v odvodňovacích a stokových systémech vně budov a specifikuje požadavky na vývoj a zavádění pracovních programů a výběr technologií. Tento dokument spolu s EN 14654-1:2021 zahrnuje kontrolu vstupů od uživatelů. Tento dokument je použitelný pro odvodňovací a stokové systémy od místa, kde odpadní vody opouštějí objekt, vnější dešťová odpadní potrubí nebo odvodňované zpevněné plochy, k místu, kde jsou odpadní vody vyústěny do čistírny odpadních vod nebo vodního recipientu Kanalizační přípojky a stoky pod budovami jsou do těchto systémů zahrnuty, pokud nejsou součástí vnitřní kanalizace těchto budov.

Obsah

ČSN EN ISO 23343-1 This document specifies a method for the determination of water sorption in a laboratory setting and provides a measure for how the durability is impacted as a result of immersion in water. Post-immersion durability reduction is calculated as the difference between the durability of the as-received sample and the durability of the wetted product.

Obsah

ČSN ETSI EN 319 401 V2.3.1 The present document specifies general policy requirements relating to Trust Service Providers (TSPs) that are independent of the type of TSP. It defines policy requirements on the operation and management practices of TSPs. Other specifications refine and extend these requirements as applicable to particular forms of TSP. The present document does not specify how the requirements identified can be assessed by an independent party, including requirements for information to be made available to such independent assessors, or requirements on such assessors. NOTE - See ETSI EN 319 403 [i.6] for details about requirements for conformity assessment bodies assessing Trust Service Providers.

Obsah

ČSN ETSI EN 303 746 V1.1.1 Tento dokument specifikuje technické vlastnosti a metody měření pro radiolokační zařízení, které mají dále uvedené vlastnosti: - jsou určeny k provozu v námořních dynamických polohových systémech pracujících s plně duplexními spoji majícími duplexní odstup 30 MHz; - jsou provozovány v kmitočtovém pásmu 9 GHz; - mají vestavěnou anténu.