Kjemiteknikk

Komité: CEN/TC 216 (Chemical disinfectants and antiseptics)
Opprinnelse:
Sluttdato: 4. okt 2018
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The method described herein is designed to determine the disinfectant activity of processes used in hospital, medical, pharmaceutical and cosmetics, veterinary, industrial and food processing areas. The product trialled is designed to be diffused as gaseous molecules or solid or liquid-form dispersants. NOTE Concerning automatic disinfectant processes: the limits to use, especially in terms of ability to diffuse throughout the room (min and max effective volumes), shall be specified and stated in the test report; certain automatic disinfection processes are only suitable for use in large-volume spaces well in excess of 150 m3. Under these conditions, the systems cannot be tested in indoor spaces less than 150 m3 due to the high power of the jet spray; "additional experimental conditions" (see 5.5.1.1.f) should therefore be used and the tests should only be performed in test rooms with volumes different to the obligatory conditions.
Komité: CEN/TC 182 (Refrigerating systems, safety and environmental requirements)
Opprinnelse:
Sluttdato: 18. okt 2018
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This document specifies the requirements for portable locating leak detectors and fixed gas detectors for all refrigerants. Locating detectors used in factories for manufacturing processes are not included in the Scope of prEN 14624. 1.1 Product application: This document applies to different applications and environments such as plant and machine rooms, production rooms, cold rooms, supermarkets, occupied spaces like offices and hotels. 1.2 Product performance: This document specifies minimum requirements for sensitivity, operating range, response time, environmental conditions and cross sensitivity from interference gases. 1.3 Product installation: This document gives guidance of suitable technology, location of detection points, interconnection with secondary equipment (e.g. initiation of mechanical ventilation, personnel warning, equipment shutdown). 1.4 Service and maintenance: This document gives guidance for service and maintenance: Sensors and mechanical equipment have a limited operating life and require regular performance verification to ensure conformity.
Komité: CEN/TC 327 (Animal feeding stuffs - Methods of sampling and analysis)
Opprinnelse:
Sluttdato: 18. okt 2018
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This document specifies a high performance liquid chromatographic – tandem mass spectrometry (LC-MS/MS) method for the simultaneous screening and/or determination of the eleven authorised coccidiostats (halofuginone, robenidine hydrochloride, nicarbazin, diclazuril, decoquinate, monensin sodium, salinomycin sodium, narasin, lasalocid sodium, semduramicin sodium and maduramicin ammonium alpha) contents in poultry, cattle and pig feed at additive and cross-contamination levels and of five non-registered coccidiostats (ethopabate, clopidol, ronidazole, dimetridazole and amprolium) at sub-additive levels and for the screening of the prohibited furazolidone antibiotic at sub-additive level, in the same matrices. The range of application of the method is fit for the purpose of the screening and determination of all eleven coccidiostats at the values set by European legislation, of the non-registered coccidiostats and of the screening of the banned antibiotic.
Komité: CEN/TC 327 (Animal feeding stuffs - Methods of sampling and analysis)
Opprinnelse:
Sluttdato: 18. okt 2018
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This document specifies a method for the determination of organic acids in animal feeding stuffs by Ion Chromatography with conductivity detection (IC-CD). The method is intended to be used for the determination of formic acid, lactic acid, propionic acid, citric acid, fumaric acid and malic acid as active substances in feed additives, premixtures, compound feed and water and for screening of acetic acid in the same matrices. This method determines the total extractable concentration of the above mentioned organic acids and their salts. The working range of the method must be determined for each organic acid by the user of this standard. The lower limit of the working range depends on the matrix and the interferences encountered. A working range between 10 [mg/l] and 100 [mg/l] should be achievable. The method was successfully tested in an inter-laboratory study in concentrations between 0,02 % up to 27 % of the above mentioned organic acids. NOTE Limitation occurs during simultaneous determination of high concentration of lactic acid and low concentration of acetic acid. If the ratio of concentration of lactic acid to acetic acid exceeds factor 20, the determination of acetic acid is not guaranteed. On the basis of the referred working range, sample weight and extraction volume, limits of quantification (LOQ), as calculated (Table 1) should be achievable.
Komité: CEN/TC 327 (Animal feeding stuffs - Methods of sampling and analysis)
Opprinnelse:
Sluttdato: 18. okt 2018
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This document specifies a method for the determination of benzoic acid and sorbic acid in animal feeding stuffs by high-performance liquid chromatography method with ultra-violet detection (HPLC-UV). The method is intended to be used for the determination of benzoic acid and sorbic acid as active substances in feed additives, premixtures and compound feed and for benzoic acid in water. This method determines the total extractable concentration of these organic acids and their salts. The working range of the method must be determined for each organic acid by the user of this standard. The lower limit of the working range depends on the matrix and the interferences encountered. A working range between 5 mg/l and 100 mg/l should be accessible. The method was successfully tested in an inter-laboratory study in concentrations between 0,02 % up to 9,0 %. On the basis of the referred working range, sample weigh and extraction volume, limits of quantification (LOQ), as calculated (Table 1) on the basis of a wavelength of 230 nm, should be achievable.
Komité: CEN/TC 38 (Durability of wood and wood-based products)
Opprinnelse:
Sluttdato: 25. okt 2018
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This European Standard specifies the minimum performance requirements in biological tests for products for curative uses against specific wood destroying organisms. It specifies the biological tests required together with the efficacy criteria to be achieved in each test. Chemicals against insects can act according to their specific properties within a short time (fast acting) or only after a long period (slow acting or with a deferred effect). Different tests and efficacy requirements are needed for these various types of curative wood preservatives. This European Standard is applicable to all wood preservative products supplied for application in liquid form for curative uses against attack by wood boring beetles. This European Standard is also applicable for products applied to prevent the growth of the dry rot fungus through masonry. This European Standard is also applicable to products for curative uses supplied for application as pastes, solids or in capsule form but only where appropriate biological methods of test exist as published European Standards or as normative annexes to this European Standard. NOTE 1 For re-testing after making variations in product formulation, guidance is given in Annex A. NOTE 2 This standard is used as a reference document for the evaluation of efficacy of biocidal products PT8 (wood preservatives) in the framework of the European Regulation on Biocidal Products (EU) No 528/2012 (BPR). This European Standard is not applicable to products used as fumigants. This European Standard is also not applicable for determining whether specific curative products, used alone or in combination, are effective in conferring long-term protection against attack by wood destroying organisms. Preventive effectiveness can be determined using EN 599-1 but only for products that can be tested using the methods and interpretative procedures defined in EN 599-1. Annex A (informative) contains a guidance on re-testing after making variations in product formulation. Annex B (informative) contains some test recommendations for specific curative products against other insect species than Hylotrupes bajulus and Anobium punctatum. Annex C (informative) contains a guidance for physical chemical properties.
Komité: CEN/TC 276 (Surface active agents)
Opprinnelse:
Sluttdato: 1. nov 2018
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This European Standard sets requirements for bio-based surfactants in terms of properties, limits, application classes and test methods. It lays down the characteristics and details for assessment of bio-based surfactants as to whether they: - are fit for purpose in terms of performance related properties; - comply with the requirements regarding the health, safety and environment which apply to general surfactants; - are derived from a certain minimum percentage of biomass; and - comply with at least similar sustainability criteria as comparable (non-bio-based) surfactants. The criteria of the regulation on Registration, Evaluation, Authorization and Restriction of Chemicals (REACH) [11] also apply to bio-based surfactants. NOTE EN 16575 defines the term "bio-based" as derived from biomass and clarifies that "bio-based" does not imply "biodegradable". In addition, "biodegradable" does not necessarily imply the use of "bio-based" material.
Komité: CEN/SS N21 (Gaseous fuels and combustible gas)
Opprinnelse:
Sluttdato: 14. nov 2018
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Komité: CEN/TC 212 (Pyrotechnic articles)
Opprinnelse:
Sluttdato: 22. nov 2018
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This European Standard specifies requirements for construction, performance and primary or selection packaging of fireworks. It is applicable to fireworks in categories F1, F2 and F3 according to EN 15947 2:2015. This European Standard does not apply for articles containing detonative explosives except for black powder or flash composition. This European Standard does not apply for articles containing pyrotechnic composition that includes any of the following substances: - arsenic or arsenic compounds; - hexachlorobenzene; - mixtures containing a mass fraction of chlorates greater than 80 %; - mixtures of chlorates with metals; - mixtures of chlorates with red phosphorus (except when used in Christmas crackers, party poppers or snaps); - mixtures of chlorates with potassium hexacyanoferrate(II); - mixtures of chlorates with sulfur (these mixtures are allowed for friction heads only); - mixtures of chlorates with sulfides; - lead or lead compounds; - mercury compounds; - white phosphorus; - picrates or picric acid; - potassium chlorate with a mass fraction of bromates greater than 0,15 %; - sulfur with an acidity, expressed in mass fraction of sulphuric acid, greater than 0,002 %; - zirconium with a particle size of less than 40 µm.
Komité: CEN/TC 212 (Pyrotechnic articles)
Opprinnelse:
Sluttdato: 22. nov 2018
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This European Standard specifies test methods. It is applicable to fireworks in categories F1, F2 and F3 according to EN 15947-2.
Komité: CEN/TC 212 (Pyrotechnic articles)
Opprinnelse:
Sluttdato: 22. nov 2018
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This European Standard defines various terms relating to the design, construction, primary packaging and testing of fireworks of categories F1, F2 and F3.
Komité: CEN/TC 212 (Pyrotechnic articles)
Opprinnelse:
Sluttdato: 22. nov 2018
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This European Standard specifies minimum labelling requirements for the article and primary or selection packaging of fireworks. It is applicable to fireworks in categories F1, F2 and F3 according to EN 15947-2:2015.
Komité: CEN/TC 212 (Pyrotechnic articles)
Opprinnelse:
Sluttdato: 22. nov 2018
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This European Standard establishes a system for dividing fireworks into categories and types. It is applicable to fireworks in categories F1, F2 and F3.