SIST EN 13037:2012

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Bodenverbesserungsmittel und Kultursubstrate - Bestimmung des pH-WertesAmendements du sol et supports de culture - Détermination du pHSoil improvers and growing media - Determination of pH65.080GnojilaFertilizersICS:Ta slovenski standard je istoveten z:EN 13037:2011SIST EN 13037:2012en,fr,de01-februar-2012SIST EN 13037:2012SLOVENSKI
STANDARDSIST EN 13037:20011DGRPHãþD



SIST EN 13037:2012



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 13037
November 2011 ICS 65.080 Supersedes EN 13037:1999English Version
Soil improvers and growing media - Determination of pH
Amendements du sol et supports de culture - Détermination du pH
Bodenverbesserungsmittel und Kultursubstrate - Bestimmung des pH-Wertes This European Standard was approved by CEN on 17 September 2011.
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, 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 STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13037:2011: ESIST EN 13037:2012



EN 13037:2011 (E) 2 Contents Page Foreword .31 Scope .42 Normative references .43 Terms and definitions .44 Principle .45 Reagents .46 Apparatus .57 Preparation .57.1 Extraction .57.1.1 General .57.1.2 Test samples passing through a 20 mm sieve .57.1.3 Test samples passing through a 40 mm sieve .68 Procedure .68.1 Calibration of the pH meter .68.2 Measurement of the pH .69 Precision .610 Test report .6Annex A (informative)
Results of an interlaboratory trial to determine pH .7Bibliography .8 SIST EN 13037:2012



EN 13037:2011 (E) 3 Foreword This document (EN 13037:2011) has been prepared by Technical Committee CEN/TC 223 “Soil improvers and growing media”, the secretariat of which is held by ASI. 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 May 2012, and conflicting national standards shall be withdrawn at the latest by May 2012. 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 supersedes EN 13037:1999. The main change to the previous edition is the change of the scope. 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, Croatia, 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. SIST EN 13037:2012



EN 13037:2011 (E) 4 1 Scope This European Standard specifies an instrumental method for the routine determination of pH in a suspension of soil improvers or growing media. This method is not applicable to liming materials and preformed materials such as mineral wool slabs and foam slabs. NOTE The requirements of the standard may differ from the national legal requirements for the declaration of the products concerned. 2 Normati
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