Kemiteknik

This document establishes the requirements for the purity analysis of materials used in the preparation of calibration gas mixtures and the use of these purity data in calculating the composition of the mixture thus prepared.

This document specifies the European Standards to which products have to conform in order to support the claims for microbicidal activity which are referred to in this document. This document also specifies terms and definitions which are used in European Standards. It is applicable to products for which activity is claimed against the following microorganisms: vegetative bacteria (including mycobacteria and Legionella), bacterial spores, yeasts, fungal spores and viruses (including bacteriophages). It is intended to: a) enable manufacturers of products to select the appropriate standards to be used in order to provide data which support their claims for a specific product; b) enable users of the product to assess the information provided by the manufacturer in relation to the use for which they intend to use the product; c) assist regulatory authorities in assessing claims made by the manufacturer or by the person responsible for placing the product on the market. It is applicable to products to be used in the area of human medicine, the veterinary area and in food, industrial, domestic and institutional areas. In the area of human medicine (Working Group 1, i.e. WG 1), it is applicable to chemical disinfectants and antiseptics to be used in areas and situations where disinfection or antisepsis is medically indicated. Such indications occur in patient care — in hospitals, in community medical facilities, dental institutions and medical laboratories for analyses and research, — in clinics of schools, of kindergartens and of nursing homes, — and may also occur in the workplace and in the home. It may also include services such as in laundries and kitchens supplying products directly for the patient. In the veterinary area (WG 2) it is applicable to chemical disinfectants and antiseptics to be used in the areas of breeding, husbandry, veterinary care facilities, production, transport and disposal of animals and veterinary laboratories for analyses and research. It is not applicable to chemical disinfectants used in the food chain following death and entry to the processing industry. In food, industrial, domestic and institutional areas (WG 3) it is applicable to chemical disinfectants and antiseptics to be used in processing, distribution and retailing of food of animal or vegetable origin. It is also applicable to products for all public areas where disinfection is not medically indicated (homes, catering, schools, nurseries, transports, hotels, offices etc.) and products used in packaging, biotechnology, laboratories (except laboratories for veterinary and medical analyses and research), pharmaceutical, cosmetic etc. industries. This document is also applicable to active substances and products under development for which no area of application has yet been specified. This document will be periodically updated to reflect the current published versions of each standard developed in CEN/TC 216. Independent of this update newly published standards are to be used, even if they are not yet mentioned in EN 14885. This document does not refer to methods for testing the toxicological and ecotoxicological properties of products or active substances.

This document lists the best available acute-toxicity data of gases taken from a search of the current literature to allow the classification of gases and gas mixtures for toxicity by inhalation.

ISO 6145 is a series of documents dealing with various dynamic methods used for the preparation of calibration gas mixtures. This document specifies a method for continuous preparation of calibration gas mixtures, from nominally pure gases or gas mixtures by use of thermal mass-flow controllers. The method is applicable to preparation of mixtures of non-reacting species, i.e. those which do not react with any material of construction of the flow path in the thermal mass-flow controller or the ancillary equipment.

If this method is employed for preparation of calibration gas mixtures the optimum performance is as follows: the relative expanded measurement uncertainty U, obtained by multiplying the standard uncertainty by a coverage factor k = 2, is not greater than 2 %.

If pre-mixed gases are used instead of pure gases, mole fractions below 10−6 can be obtained. The measurement of mass flow is not absolute and the flow controller requires independent calibration.

The merits of the method are that a large quantity of the calibration gas mixture can be prepared on a continuous basis and that multi-component mixtures can be prepared as readily as binary mixtures if the appropriate number of thermal mass-flow controllers is utilized.

NOTE Gas blending systems, based upon thermal mass-flow controllers, and some including the facility of computerization and automatic control, are commercially available

prEN ISO 14451-1 establishes a terminology related to test methods and requirements for pyrotechnic articles for vehicles.

prEN ISO 14451-2 establishes uniform test methods for pyrotechnic articles for vehicles.

prEN ISO 14451-3 specifies labelling requirements for pyrotechnic articles for vehicles.

prEN ISO 14451-4 specifies the types and order of tests to be applied to micro gas generators and sets out the associated acceptance criteria and means of categorization. ISO 14451-4:2013 applies to type tests. ISO 14451-4:2013 is not applicable to articles containing military explosives or commercial blasting agents except for black powder or flash composition.

prEN ISO 14451-5 specifies the types and order of tests for application to the airbag gas generators and sets out the acceptance criteria and means of categorization. ISO 14451-5:2013 applies to type tests. ISO 14451-5:2013 is not applicable to articles containing military explosives or commercial blasting agents except for black powder or flash composition.

prEN ISO 14551-6 specifies the types and order of tests for application to the airbag modules and sets out the acceptance criteria and means of categorization. It applies to type tests and is not applicable to articles containing military explosives or commerical blasting agents except for black powder or flash composition.

prEN ISO 14451-7 specifies the types and order of tests to be applied to the seatbelt pretensioners and sets out the associated acceptance criteria and means of categorization. It applies to type tests and is not applicable to articles containing military explosives or commercial blasting agents except for black powder or flash composition.

prEN ISO 14451-8 specifies the types and order of tests to be applied to the igniter and sets out the acceptance criteria and means of categorization. It applies to type tests. It is not applicable to articles containing military explosives or commercial blasting agents except for black powder or flash composition.

prEN ISO 14451-9 specifies the types and order of tests to be applied to the actuators and sets out the associated acceptance criteria and means of categorization. It applies to type tests. It is not applicable to articles conaining military explosives or commercial blasting agents except for black powder or flash composition.

prEN ISO 14451-10 specifies the types and order of tests to be applied to the semi finished products and sets out the acceptance criteria and means of categorization. It applies to type tests. It is not applicable to articles containing military explosives or commercial blasting agents except for black powder or flash composition.