EN 12662:2008

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Liquid petroleum products - Determination of contamination in middle distillatesWLKProduits pétroliers liquides - Détermination de la contamination des distillats moyensFlüssige Mineralölerzeugnisse - Bestimmung der Verschmutzung in MitteldestillatenTa slovenski standard je istoveten z:EN 12662:2008SIST EN 12662:2008en,fr75.160.20ICS:SIST EN 12662:19991DGRPHãþDSLOVENSKI
STANDARDSIST EN 12662:200801-maj-2008

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12662March 2008ICS 75.160.20Supersedes EN 12662:1998
English VersionLiquid petroleum products - Determination of contamination inmiddle distillatesProduits pétroliers liquides - Détermination de lacontamination des distillats moyensFlüssige Mineralölerzeugnisse - Bestimmung derVerschmutzung in MitteldestillatenThis European Standard was approved by CEN on 24 February 2008.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2008 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12662:2008: E

According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.

This standard applies to liquid petroleum products having a kinematic viscosity not exceeding 8 mm2/s at 20 °C, or 5 mm2/s at 40 °C, e.g. diesel fuel as specified in EN 590 [1] or light fuel oils.
Although the test method precision has not been defined, the method described may also be used for blends containing more than 5% (V/V) FAME and for petroleum products having a viscosity exceeding the above.
NOTE 2 For the purposes of this European Standard, the term "% (V/V)" is used to represent the volume fraction.
WARNING — Use of this standard may involve hazardous materials, operations and equipment. This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations prior to use. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 14275, Automotive fuels – Assessment of petrol and diesel fuel quality - Sampling from retail site pumps and commercial site fuel dispensers EN ISO 3170, Petroleum liquids — Manual sampling (ISO 3170:2004) EN ISO 3171, Petroleum liquids - Automatic pipeline sampling (ISO 3171:1988) ISO 3819 Laboratory glassware - Beakers 3 Terms and definitions For the purposes of this standard, the following term and definition applies. contamination undissolved substances retained on a filter after filtration under test conditions 4 Principle A sample portion of 800 ml ± 25 ml is weighed and filtered under vacuum through a pre-weighed filter. The filter with the residue is washed, dried and weighed. Contamination is calculated from the difference in mass of the filter and expressed relative to the sample mass as mg/kg.
5 Reagents and materials 5.1 Heptane, with a purity no less than 99,0 % (V/V), filtered using a filter (membrane) with a mean pore size of 0,45 µm.

NOTE Propan-2-ol is used to dry glassware and the sample container after rinsing with water.
6 Apparatus All glassware and sampling vessels to be carefully cleaned as described in Clause 7. Usual laboratory apparatus and glassware, together with the following:
6.1
Filter apparatus, suitable for a filter (6.2), as shown in Figure 1.
6.2
Filters, of high retention glass fibre type, 47 mm or 50 mm in diameter and with a 0,7 µm mean pore size. 6.3
Beakers, tall form 1 l, conforming with ISO 3819 or an equivalent national standard.
6.4
Oven, of the static type (without fan assisted circulation), explosion-proof, capable of heating to 110 °C ± 5 °C.
6.5
Desiccator, containing fresh
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