EN 12945:2014

Liming materials - Determination of neutralizing value - Titrimetric methods

This European Standard specifies two methods for the determination of the neutralizing value (NV) of liming materials.
Method A is applicable to all liming materials except silicate liming materials.
Method B is applicable to all liming materials.
Both methods do not correctly take into account the potential neutralizing value of material containing more than 3 % P2O5. For a more accurate agronomic assessment of products containing more than 3 % P2O5 determine the liming efficiency according to EN 14984.
NOTE   The methods described in ISO 6598 [1] and ISO 7497 [2] can be used for the determination of P2O5 content. Further information on P analyses is given in [3] and [4].

Kalkdünger - Bestimmung des Neutralisationswertes - Titrimetrische Verfahren

Diese Europäische Norm legt zwei Verfahren zur Bestimmung des Neutralisationswertes (NV) von Calcium /Magnesium Bodenverbesserungsmitteln fest.
Verfahren A gilt für alle Calcium /Magnesium Bodenverbesserungsmittel, ausgenommen sind Kalke aus Eisenhüttenschlacke.
Verfahren B gilt für alle Calcium /Magnesium Bodenverbesserungsmittel.
Beide Verfahren berücksichtigen nicht korrekt den möglichen Neutralisationswert von Material, das mehr als 3 % Massenanteil P2O5 enthält. Für eine genauere agrarökonomische Bewertung von Produkten, die mehr als 3 % Massenanteil P2O5 enthalten, wird die Wirksamkeit der Bodenverbesserung nach EN 14984 bestimmt.
Zur Bestimmung des P2O5 Gehalts können die in ISO 6598 [1] und ISO 7497 [2] beschriebenen Verfahren verwendet werden. Weitere Informationen zur P-Analyse sind in den Literaturhinweisen [3] und [4] angegeben.

Amendements minéraux basiques - Détermination de la valeur neutralisante - Méthodes par titrimétrie

La présente Norme européenne spécifie deux méthodes pour la détermination de la valeur neutralisante (VN) des amendements minéraux basiques.
La méthode A est applicable à tous les amendements minéraux basiques, à l'exception des amendements minéraux basiques sidérurgiques.
La méthode B est applicable à tous les amendements minéraux basiques.
Les deux méthodes ne prennent pas en compte correctement la valeur neutralisante potentielle d’un matériau contenant plus de 3% de P2O5. Pour une évaluation agronomique plus précise des produits contenant plus de 3% de P2O5, déterminer l’efficacité du chaulage selon l’EN 14984.
Les méthodes ISO 6598 [1] et ISO 7497 [2] peuvent être utilisées pour la détermination de la teneur en P2O5. De plus ample information sur le P sont données en [3] et [4].

Sredstva za apnjenje - Določevanje nevtralizacijske vrednosti - Titrimetrijske metode

EN 12945 določa dve metodi za določevanje nevtralizacijske vrednosti (NV) sredstev za apnenje. Metoda A se uporablja za vsa sredstva za apnenje razen silikatnih sredstev za apnenje. Metoda B se uporablja za vsa sredstva za apnenje. Pri obeh metodah se pri sredstvih, ki vsebujejo več kot 3 % P2O5, morebitna nevtralizacijska vrednost ne upošteva pravilno. Za natančnejšo agronomsko oceno izdelkov, ki vsebujejo več kot 3 % P2O5, je treba učinkovitost apnenja ugotavljati po standardu EN 14984.

General Information

• Status: Withdrawn
• Publication Date: 01-Apr-2014
• Withdrawal Date: 25-Oct-2016
• ICS: 65.080 - Fertilizers
• Technical Committee: CEN/TC 260 - Fertilizers and liming materials
• Drafting Committee: CEN/TC 260/WG 3 - Liming materials
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Completion Date: 26-Oct-2016
• Ref Project: SIST EN 12945:2014 - Liming materials - Determination of neutralizing value - Titrimetric methods

Relations

• Replaces: EN 12945:2008/AC:2009 - Liming materials - Determination of neutralizing value - Titrimetric methods
• Effective Date: 09-Apr-2014
• Replaces: EN 12945:2008 - Liming materials - Determination of neutralizing value - Titrimetric methods
• Effective Date: 09-Apr-2014
• Merged Into: EN 12945:2014+A1:2016 - Liming materials - Determination of neutralizing value - Titrimetric methods
• Effective Date: 18-Jan-2023
• Amended By: EN 12945:2014/FprA1 - Liming materials - Determination of neutralizing value - Titrimetric methods
• Effective Date: 27-Aug-2014

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.LWULPHWULMVNHPHWRGHCalcium-/Magnesium-Bodenverbesserungsmittel - Bestimmung des Neutralisationswertes - Titrimetrische VerfahrenAmendements minéraux basiques - Détermination de la valeur neutralisante - Méthodes par titrimétrieLiming materials - Determination of neutralizing value - Titrimetric methods65.080GnojilaFertilizersICS:Ta slovenski standard je istoveten z:EN 12945:2014SIST EN 12945:2014en,fr,de01-julij-2014SIST EN 12945:2014SLOVENSKI
STANDARDSIST EN 12945:2008/AC:2009SIST EN 12945:20081DGRPHãþD



SIST EN 12945:2014



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12945
April 2014 ICS 65.080 Supersedes EN 12945:2008English Version
Liming materials - Determination of neutralizing value - Titrimetric methods
Amendements minéraux basiques - Détermination de la valeur neutralisante - Méthodes par titrimétrie
Kalkdünger - Bestimmung des Neutralisationswertes - Titrimetrische Verfahren This European Standard was approved by CEN on 8 February 2014.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC 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 translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12945:2014 ESIST EN 12945:2014



EN 12945:2014 (E) 2 Contents Page Foreword .3 Introduction .4 1 Scope .5 2 Normative references .5 3 Terms and definitions .5 4 Principle .5 5 Reagents .5 6 Apparatus .6 7 Sampling .6 8 Procedure .6 9 Calculation and expression of results for method A and method B .8 10 Precision .8 11 Test report .9 Annex A (informative) Results of an inter-laboratory trial to determine the neutralizing value . 10 Bibliography . 11
SIST EN 12945:2014



EN 12945:2014 (E) 3 Foreword This document (EN 12945:2014) has been prepared by Technical Committee CEN/TC 260 “Fertilizers and liming materials”, the secretariat of which i
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