Normy

Obsah

ČSN EN ISO 16383-1 This document specifies a method of determining the water content of rocks. This document is applicable to the laboratory determination of the water content of a rock test specimen by oven-drying within the scope of geotechnical investigations. The oven-drying method is the definitive procedure used in usual laboratory practice. The practical procedure for determining the water content of a rock is to determine the mass loss on drying the test specimen to a constant mass in a drying oven controlled at a given temperature. The mass loss is assumed to be due to free water and is referenced to the remaining dry mass of the test specimen. NOTE - This document fulfils the requirements of the determination of water content of rock for geotechnical investigation and testing according to EN 1997-2.

Obsah

ČSN EN 15979 This document describes a method for the analysis of mass fractions of the impurities Al, B, Ca, Cr, Cu, Fe, Mg, Ni, Ti, V and Zr in powdered and grain-shaped silicon carbide of ceramic raw materials and ceramic materials. This application can also be extended to other metallic elements and other similar non-metallic powdered and grain-shaped materials such as carbides, nitrides, graphite, carbon blacks, cokes, carbon, as well as a number of further oxidic raw and basic materials after appropriate testing. This testing procedure is applicable to mass fractions of the impurities mentioned above from approximately 1 mg/kg up to approximately 3 000 mg/kg, after verification. In some cases, it is possible to extend the range up to 5 000 mg/kg depending on element, emission lines, DCArc parameters, and sample mass.

Obsah

ČSN EN 12697-35 Tento dokument popisuje laboratorní míchání asfaltových materiálů pro výrobu vzorků. Tento dokument specifikuje referenční teploty hutnění asfaltových směsí a referenční teplotu pokládky litého asfaltu podle gradace silničních asfaltů a tvrdých silničních asfaltů. Příloha A popisuje metodu laboratorního míchání za použití zpěněného asfaltu. Příloha B popisuje metodu laboratorního míchání za použití asfaltové emulze. Příloha C popisuje přípravu vzorků litého asfaltu po laboratorním míchání.

Obsah

ČSN EN 868-2 ČSN EN 868-2:2025 specifikuje zkušební metody a hodnoty pro sterilizační obaly vyrobené z krepovaného papíru pro jedno použití, netkaných materiálů pro jedno použití a opakovaně použitelných tkaných textilních materiálů, které se používají jako sterilní bariérové systémy a/nebo obalové systémy pro zdravotnické prostředky sterilizované v konečném obalu. Kromě obecných požadavků specifikovaných v normách EN ISO 11607-1 a EN ISO 11607-2, tato část EN 868 specifikuje materiály, zkušební metody a hodnoty, které jsou specifické pro výrobky, na které se vztahuje tento dokument.

Obsah

ČSN EN ISO 17971 This document specifies a test method for determining the screen-touch properties of fabrics. The method is applicable to all types of fabrics intended for use in products that serve as an interface when handling touchscreens.

Obsah

ČSN EN ISO 16408 This document specifies physical and chemical requirements and test methods for oral rinses. It also specifies requirements on the accompanying information to be given in the manufacturer's instructions for use and on containers as well as the requirements for packaging. Common labelling aspects are specified in order to enhance international understanding and trade. This document is not applicable to other delivery systems (e.g. mouth sprays, foams, powders). It is not intended to describe regulatory aspects, e.g. methods of prescription. This document is not applicable to oral rinses available by prescription only.

Obsah

ČSN EN ISO 13669 This document specifies the general characteristics of grooved pins, made of steel and stainless steel, with nominal diameters 1 mm to 25 mm. These grooved pins are designed to fulfil the main following functions, due to the elastic fit behaviour of the grooves: - locking of two (or more) parts, - positioning or guiding, - relative rotation of the assembled parts.

Obsah

ČSN EN IEC 60721-3-6 ed. 2 This part of IEC 60721 classifies the groups of environmental parameters and their severities to which a product is subjected when installed aboard a ship. Ships where electrotechnical products may be permanently or temporarily installed include - ships propelled by mechanical means, including mobile offshore units, and - ships not propelled by mechanical means, including sailing boats and life rafts. The classes defined apply to all sizes of ship from pleasure craft to trawlers, ferry boats, icebreakers, cargo ships including tankers. The areas in which ships normally navigate are - inland waterways (canals, rivers, lakes etc.), - coastal waters, and - oceans. Areas where ships navigate in ice are also included. The environmental conditions specified in this document are those that the product can be exposed to whilst permanently or temporarily installed for the running, handling and safety of the ship. The environmental conditions can also be used for other products, installed in a similar way at similar locations. Accidental incidents are not included but it can be important to take their occurrence into account for products vital to the safety of the ship. The classification also does not cover the effects of water pressure on submerged products. Classification of storage and transportation environmental conditions are given in other subparts of the IEC 60721 3 series.

Obsah

ČSN EN ISO 14880-3 This document specifies methods for testing optical properties, other than wavefront aberrations[1] of microlenses in microlens arrays. It is applicable to microlens arrays with very small lenses formed on one or more surfaces of a common substrate and to graded-index microlenses.

Obsah

ČSN EN 14601 Tento dokument se vztahuje na ručně ovládané koncové kohouty určené k uzavírání hlavního potrubí a napájecího potrubí pneumatického brzdového systému a systému stlačeného vzduchu kolejových vozidel, bez ohledu na typ vozidel a rozchod kolejí. Tento dokument stanovuje požadavky na konstrukci, rozměry, zkoušení a certifikaci (kvalifikační a/nebo typová zkouška), a značení.

Obsah

ČSN P CEN/TS 18084 This document specifies recommendations for the design of polymeric products used in road vehicles to facilitate separation and recycling after shredding. This document is not applicable to dismantling of road vehicles and removal of parts and components. This document is not applicable to elastomers.

Obsah

ČSN EN 18061 This document describes steps, conditions and protocols for safe maintenance and repair to facilitate remanufacturing, re-use and preparation for repurposing of battery systems, battery packs and battery modules designed for EV applications for alkali-ion (Li-ion, Na-ion), Pb, NiMH and combined chemistries. This document also includes an informative guidance on design and assembly techniques that facilitate the maintenance, repair, re-use and preparation for repurposing of EV battery systems, battery packs and battery modules (Annex B). NOTE - Individual cell is replaced when it is allowed and described by the EV battery systems, battery packs and battery modules manufacturer. In this case, battery modules manufacturer provides the necessary instructions for cell replacement.