Normy

Obsah

ČSN EN ISO 12628 This document specifies the equipment and procedures for determining trace quantities of the water-soluble chloride, fluoride, silicate and sodium ions in an aqueous extract of the product. It also describes a procedure for the determination of the pH of the aqueous extract. It is applicable to thermal insulating products.

Obsah

ČSN EN ISO 12624 This document specifies the equipment and procedures for determining trace quantities of the water-soluble chloride, fluoride, silicate and sodium ions in an aqueous extract of the product. It also describes a procedure for the determination of the pH of the aqueous extract. It is applicable to thermal insulating products.

Obsah

ČSN EN ISO 12629 This document specifies the equipment and procedure for determining the water vapour transmission properties in the steady state under specified test conditions for test specimens of preformed pipe insulation. It is applicable to thermal insulating products. It is intended to be used for homogeneous materials (see NOTE below) and for products which can have integral skins or adhered facings of some different material. NOTE - A material is considered to be homogeneous in terms of mass distribution if its density is approximately the same throughout, i.e. if the measured density values are close to its mean density.

Obsah

ČSN EN ISO 12623 This document specifies the equipment and procedures for determining the short-term water absorption of preformed pipe insulation by partial immersion in water. It is applicable to thermal insulating products. NOTE - It is intended to simulate the water absorption caused by exposure to rain for 24 h during product installation. This document has been prepared for products used to insulate building equipment and industrial installations, but it can also be applied to products used in other areas.

Obsah

ČSN EN ISO 18097 This document specifies the equipment and procedures for determining the maximum service temperature of flat insulation products. It is applicable to thermal insulating products.

Obsah

ČSN EN ISO 18096 This document specifies the equipment and procedures for determining the maximum service temperature for preformed pipe insulation. It is applicable to thermal insulating products.

Obsah

ČSN EN 17495 This document specifies laboratory test procedures to determine a high-frequency dynamic stiffness, "acoustic stiffness", of resilient components of rail fastening assemblies. This document is applicable to complete rail fastening assemblies and to pad components of fastening systems including both discrete and continuous fastening systems. It is applicable to the measurement of the dynamic transfer stiffness under a prescribed pre-load and the associated hysteretic damping loss factor. It provides measurement methods and pre-load, excitation and frequency range conditions for application to ground borne and structure borne noise as well as for rolling noise. It is not applicable to the measurement of the stiffness of pads and fastening assemblies under static or low-frequency dynamic loading used for track mechanics.

Obsah

ČSN EN ISO 17072-2 This document specifies a method for the determination of the total metal content in leather using digestion of the leather and subsequent determination with inductively coupled plasma optical emission spectrometry (ICP-OES), inductively coupled plasma mass spectrometry (ICP-MS), atomic absorption spectrometry (AAS) or spectrometry of atomic fluorescence (SFA). This method determines the total metal content in leather. It is not compound-specific or specific to the oxidation state of the metals. The method is applicable for determining the following metals: Aluminium (Al), Copper (Cu), Potassium (K), Antimony (Sb), Iron (Fe), Selenium (Se), Arsenic (As), Lead (Pb), Silicon (Si), Barium (Ba), Magnesium (Mg), Sodium (Na), Cadmium (Cd), Manganese (Mn), Tin (Sn), Calcium (Ca), Mercury (Hg), Titanium (Ti), Chromium (Cr) (except chromium-tanned leathers), Molybdenum (Mo), Zinc (Zn), Cobalt (Co), Nickel (Ni), Zirconium (Zr). This method is also suitable for determining Boron (B) in leather. In the case of chromium-tanned leathers, it is often more relevant to use ISO 5398-1, ISO 5398-2, ISO 5398-3 or ISO 5398-4. Interlaboratory test results and the quantification limits possible with ICP-OES are given in Tables A.1 and A.2. For the determination of Al and Ti in leather, a digestion procedure is given in Annex B.

Obsah

ČSN EN ISO 6942 This document specifies two complementary methods (method A and method B) for determining the behaviour of materials for heat protective clothing subjected to heat radiation. These tests are carried out on representative single or multi-layer textiles or other materials intended for clothing for protection against heat. They are also applicable to assemblies, which correspond to the overall build up of a heat protective clothing assembly with or without underclothing, Method A serves for visual assessment of any changes in the material after the action of heat radiation. With method B the protective effect of the materials is determined. The materials may be tested either by both methods or only by one of them. The tests according to these two methods serve to classify materials; however, to be able to make a statement or prediction as to the suitability of a material for protective clothing additional criteria must be taken into account. Since the tests are carried out at room temperature the results do not necessarily correspond to the behaviour of the materials at higher ambient temperatures and therefore are only to a limited extent suitable for predicting the performance of the protective clothing made from the materials under test.

Obsah

ČSN P CEN/TS 17732 Tento dokument specifikuje terminologii pro pomocné půdní látky a pěstební substráty. Příloha A obsahuje přehled všech termínů definovaných v tomto dokumentu v abecedním pořadí.

Obsah

ČSN EN ISO 23372 This document specifies minimum performance and safety requirements for air entrainment devices used for delivery of designated oxygen concentrations to patients. It provides a test method to check the accuracy of the oxygen concentration in the air/oxygen mixture generated by the air entrainment devices. Air entrainment devices can be fixed to deliver a single oxygen concentration or adjustable, to deliver a range of oxygen concentration outputs. This document also specifies marking requirements and recommends an optional system of colour coding to assist the user in identifying the designated oxygen concentration. This document does not cover air entrainment devices which are integral with medical devices specified in other standards (e.g. emergency lung ventilators, humidifiers, nebulizers).

Obsah

ČSN EN ISO 23368 This document specifies requirements for low-flow nasal cannulae, used in both home care and hospital environments for the administration of oxygen therapy. This document does not include requirements to prevent the proliferation of fire within the tubing but does specify a user-detachable connection that can be used to fit a fire-activated oxygen shut-off device.