Measurement of iron content
RESOLUTION OENO 66/2000
XV. WINE VINEGAR - MEASUREMENT OF IRON CONTENT (OIV-MA-VI-15)
1. INTRODUCTION
As for the other metals, the presence of iron in vinegars mainly has its origin in contaminations from contact materials during their manufacture, and of course the iron of the wine itself from which the vinegar has been made.
Measurement of zinc content
RESOLUTION OENO 65/2000
XIV.
Measurement of the copper content
RESOLUTION OENO 64/2000
XIII. WINE VINEGAR - MEASUREMENT OF THE COPPER CONTENT (OIV-MA-VI-13)
1. INTRODUCTION
The presence of copper in vinegars mainly has its origin in contaminations from contact materials during the different phases of their manufacture.
Measurement of sulphate content
RESOLUTION OENO 63/2000
XII. WINE VINEGAR - MEASUREMENT OF SULPHATE CONTENT (OIV-MA-VI-12)
1. INTRODUCTION
The main objective of the measurement of the sulphate content in vinegar is, as for the measurement of the chloride content, the detection of frauds (aimed at increasing the total dry extract).
Measurement of chloride content
RESOLUTION OENO 62/2000
XI. WINE VINEGAR - MEASUREMENT OF CHLORIDE CONTENT (OIV-MA-VI-11)
1. INTRODUCTION
The main objective of the measurement of chloride content is the detection of the fraudulent increase in the dry extract by the addition of sodium chloride.
Validation protocol of analytical methods
RESOLUTION OENO 6/2000
VALIDATION PROTOCOL OF ANALYTICAL METHODS
THE GENERAL ASSEMBLY,
GIVEN Article 5, paragraph 4 of the International Unification Convention on Analytical Methods of October 13, 1954, on the proposal of the Sub-commission on Methods of Analysis and Evaluation of Wine,
DECIDES
Determination of total ascorbic acid content
RESOLUTION OENO 61/2000
X.
Determination of the total sulfur dioxide content
RESOLUTION OENO 60/2000
IX.
Determination of the non-volatile reducing substances content
RESOLUTION OENO 59/2000
VIII. WINE VINEGARS - DETERMINATION OF THE NON-VOLATILE REDUCING SUBSTANCES CONTENT (OIV-MA-VI-08)
1. DEFINITION
Non-volatile reducing substances are all the non-volatile substances having a reducing power in a copper-alkali solution and those that also have this power after hydrolysis.