VASSANELLI LAB ANALYSES
FREE SULPHUR DIOXIDE (OIV-MA-AS323-04B R2009)
ANALYTICAL TECHNIQUE: Titrimetria
UNIT OF MEASUREMENT: mg/l
METHOD: OIV-MA-AS323-04B R2009
MATRICES ( A if accredited) :
Must
A, RCM
, Wine
A
DESCRIPTION:
Represents the amount of sulphur dioxide (so2) not binded to other molecules. It is used in different phases of wine production thanks to its antioxidant and antimicrobial properties. The value of molecular so2 depends greatly on free so2. excesses can cause unpleasant smells (rotten eggs, garlic, onion).
Determination takes place by means of iodometric titration.
This method often overestimates real so2 content because iodium also reacts with other molecules present in the wine (ascorbic acid, polyphenols, colouring...).
REQUEST FOR QUOTE
Specific requests described by You in the "notes" box below.
Matrices (types of product): filling this field is compulsory for submitting the request
