SIST EN 13971:2003

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Carbonate liming materials - Determination of reactivity - Potentiometric titration method with hydrochloric acidKarbonatni materiali za apnjenje – Ugotavljanje reaktivnosti – Potenciometrijska titracijska metoda s solno kislinoAmendements minéraux basiques carbonatés - Détermination de la réactivité - Méthode par titration potentiométrique a l'acide chlorhydriqueCarbonatische Kalke - Bestimmung der Reaktivität - Potentiometrisches Titrationsverfahren mit SalzsäureTa slovenski standard je istoveten z:EN 13971:2002SIST EN 13971:2003en65.080ICS:SLOVENSKI
STANDARDSIST EN 13971:200301-oktober-2003

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13971December 2002ICS 65.080English versionCarbonate liming materials - Determination of reactivity -Potentiometric titration method with hydrochloric acidAmendements minéraux basiques carbonatés -Détermination de la réactivité - Méthode par titrationpotentiométrique à l'acide chlorhydriqueCarbonatische Kalke - Bestimmung der Reaktivität -Potentiometrisches Titrationsverfahren mit SalzsäureThis European Standard was approved by CEN on 23 October 2002.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 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 Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2002 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13971:2002 E

Preparation of the test portion of liming materials coarser than 1 mm.10Annex B (normative)
Arrangement of the test apparatus.11Bibliography.12

1)ISO 5725:1986 (now withdrawn) was used to obtain the precision data.

1) mm diameter times (50
1) mm length, with central ring.4.6 Stop-watch5 Reagents5.1 GeneralAll reagents shall be of recognized analytical grade.5.2 Hydrochloric acid solution, mass fraction, w(HCl) = 25 %.5.3 Hydrochloric acid, standard volumetric solution, c(HCl) = 5,0 mol/l.5.4 Calcium carbonate, precipitated, mass fraction, w(CaCO3) = of at least 99 %.5.5 Silicone defoamer5.6 Standard buffer solution, pH 2,0 (commercial solution).NOTEThis has a limited life.5.7 Standard buffer solution, pH 4,0 (commercial solution).NOTEThis has a limited life.
2)Metrohm 716 DMS Titrino® is an example of a suitable product available commercially. This information is given for theconvenience of users of this European Standard and does not constitute an endorsement by CEN of this product. Equivalentproducts may be used if they can be shown to lead to the same results.
...