EN 12138:1997

Name: EN 12138:1997
Brand: CEN

Withdrawn

Fruit and vegetable juices - Enzymatic determination of D-malic acid content - NAD spectrometric method

Withdrawn date

31-03-1998

Published date

17-09-1997

Publisher

Comite Europeen de Normalisation

Foreword
1 Scope
2 Normative references
3 Symbols and abbreviations
4 Principle
5 Reagents
6 Apparatus
7 Procedure
8 Calculation
9 Precision
10 Test report
Annex A (informative) Bibliography
Annex B (informative) Information on how to treat "creep"
reactions
Annex C (informative) Statistical results of the interlaboratory
tests

This draft European Standard specifies an enzymatic method for the determination of the total content of D-malic acid, in fruit and vegetable juices and related products.

Committee	CEN/TC 174
DocumentType	Standard
PublisherName	Comite Europeen de Normalisation
Status	Withdrawn

Standards	Relationship
NS EN 12138 : 1ED 1998	Identical
BS EN 12138:1998	Identical
NEN EN 12138 : 1997	Identical
NBN EN 12138 : 1997	Identical
PN EN 12138 : 2000	Identical
I.S. EN 12138:1998	Identical
UNE-EN 12138:2000	Identical
SN EN 12138 : 1998	Identical
UNI EN 12138 : 1999	Identical
NF EN 12138 : 1997	Identical
DIN EN 12138:1997-12	Identical

ISO 5725:1986	Precision of test methods Determination of repeatability and reproducibility for a standard test method by inter-laboratory tests
ISO 3696:1987	Water for analytical laboratory use — Specification and test methods
EN ISO 3696:1995	Water for analytical laboratory use - Specification and test methods (ISO 3696:1987)