SIST EN 12945:2014+A1:2016
(Main)Liming materials - Determination of neutralizing value - Titrimetric methods
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
Amendements minéraux basiques - Détermination de la valeur neutralisante - Méthodes par titrimétrie
Sredstva za apnjenje - Določevanje nevtralizacijske vrednosti - Titrimetrijske metode (vključno z dopolnilom A1)
Ta evropski standard določa dve metodi za določevanje nevtralizacijske vrednosti (NV) sredstev za apnjenje.
Metoda A se uporablja za vsa sredstva za apnjenje razen silikatnih sredstev za apnjenje.
Metoda B se uporablja za vsa sredstva za apnjenje.
Pri obeh metodah se pri sredstvih, ki vsebujejo več kot 3 % P2O5, morebitna nevtralizacijska vrednost ne upošteva pravilno. Za natančnejšo agronomsko oceno proizvodov, ki vsebujejo več kot 3 % P2O5, je treba učinkovitost apnjenja ugotavljati v skladu s standardom EN 14984.
OPOMBA: Metode, opisane v standardih ISO 6598 [1] in ISO 7497 [2], se lahko uporabljajo za določevanje deleža P2O5. Dodatne informacije o analizah P so podane v sklicih [3] in [4].
General Information
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.LWULPHWULMVNHKalkdünger - 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 12945:2014+A1:2016SIST EN 12945:2014+A1:2016en,fr,de01-december-2016SIST EN 12945:2014+A1:2016SLOVENSKI
STANDARDSIST EN 12945:20141DGRPHãþD
SIST EN 12945:2014+A1:2016
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12945:2014+A1
October
t r s x ICS
x wä r z r Supersedes EN
s t { v wã t r s vEnglish Version
Liming materials æ Determination of neutralizing value æ Titrimetric methods Amendements minéraux basiques æ Détermination de la valeur neutralisante æ Méthode par trimétrie
Kalkdünger æ Bestimmung des Neutralisationswertes æ Titrimetrische Verfahren This European Standard was approved by CEN on
z February
t r s v and includes Amendment
s approved by CEN on
s s June
t r s xä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey andUnited Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
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9
t r s x CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s t { v wã t r s v ªA sã t r s x ESIST EN 12945:2014+A1:2016
EN 12945:2014+A1:2016 (E) 2 Contents Page European 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 . 9 11 Test report . 9 Annex A (informative)
Results of an inter-laboratory trial to determine the neutralizing value . 10 Annex B (informative)
!Conversion tables" . 11 Bibliography . 14
SIST EN 12945:2014+A1:2016
EN 12945:2014+A1:2016 (E) 3 European foreword This document (EN 12945:2014+A1:2016) has been prepared by Technical Committee CEN/TC 260 “Fertilizers and liming materials”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by April 2017 and conflicting national standards shall be withdrawn at the latest by April 2017. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document includes Amendment 1 approved by CEN on 11 June 2016. This document supersedes !EN 12945:2014". The start and finish of text introduced or altered by amendment is indicated in the text by tags !". The following changes !had been made to the former edition EN 12945:2008": a) sc
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