CEN/TS 15921:2009

SLOVENSKI STANDARD
01-februar-2010
Gnojila - Ekstrakcija topnega fosforja po Petermannu pri 65 °C
Fertilizers - Extraction of soluble phosphorus according to Petermann at 65 °C
Düngemittel - Extraktion des löslichen Phosphors nach Petermann bei 65 °C
Engrais - Extraction du phosphore soluble selon Petermann à 65 °C
Ta slovenski standard je istoveten z: CEN/TS 15921:2009
ICS:
65.080 Gnojila Fertilizers
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL SPECIFICATION
CEN/TS 15921
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
September 2009
ICS 65.080
English Version
Fertilizers - Extraction of soluble phosphorus according to
Petermann at 65 °C
Engrais - Extraction du phosphore soluble selon Petermann Düngemittel - Extraktion des löslichen Phosphors nach
à 65 °C Petermann bei 65 °C
This Technical Specification (CEN/TS) was approved by CEN on 3 August 2009 for provisional application.

The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit their
comments, particularly on the question whether the CEN/TS can be converted into a European Standard.

CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS available
promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS)
until the final decision about the possible conversion of the CEN/TS into an EN is reached.

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 STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2009 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 15921:2009: E
worldwide for CEN national Members.

Contents Page
Foreword .3
1 Scope .4
2 Normative references .4
3 Terms and definitions .4
4 Principle .4
5 Sampling .4
6 Reagents .5
7 Apparatus .6
8 Procedure .6
Bibliography .7

Foreword
This document (CEN/TS 15921:2009) has been prepared by Technical Committee CEN/TC 260 “Fertilizers
and liming materials”, the secretariat of which is held by DIN.
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 has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to announce this Technical Specification: 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.
1 Scope
This document specifies the procedure for the determination of soluble phosphorus in alkaline ammonium
citrate.
The method is applicable exclusively to precipitated dehydrated dicalcium phosphate (CaHPO . 2H O).
4 2
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
referenc
...