|
This is where all wine samples are
subject to routine analyses, namely of the most
representative wine parameters.
Divided into two, each sub-laboratory
performs similar tasks but with different methods: one
division uses automatic measuring equipment to obtains
"rapid" results, whilst the other carries out
the same tests but with testing bench methods, so-called
official and/or reference methods.
The following tests are performed in
the first laboratory, according to the
aforementioned techniques:
| Test |
Method used |
| Actual Alcohol Content |
Infra-red Spectroscopy |
| Volumetric Mass |
Automatic Hydrometer |
| Total Sulphur Dioxide |
Segmental Steady Flow |
| Free Sulphur Dioxide |
Segmental Steady Flow |
| Total Acidity |
Segmental Steady Flow |
| Volatile Acidity |
Segmental Steady Flow |
| pH |
Segmental Steady Flow |
| Reducing Sugars |
Segmental Steady Flow |
For some specific tasks, the following tests are performed:
| Test |
Method used |
| Glucose |
Segmental Steady Flow |
| Tartaric Acid |
Segmental Steady Flow |
| Malic Acid |
Segmental Steady Flow |
| Lactic Acid |
Segmental Steady Flow |
The following tests are performed in
the second laboratory:
| Test |
Method used |
| Actual Alcohol Content |
NP 2143 |
| Total Acidity |
Reg. CEE 2676/90 |
| Volatile Acidity |
Reg. CEE 2676/90 |
| Fixed Acidity |
Reg. CEE 2676/90 |
| pH |
Reg. CEE 2676/90 |
| Total Sulphur Dioxide |
Reg. CEE 2676/90 |
| Free Sulphur Dioxide |
Reg. CEE 2676/90 |
| Alcohol by Volume |
NP 2142 |
| Total Dry Extract |
NP 2222 |
| Reducing Sugars |
NP 2223 |
| Total Sugar Content |
NP 2224 |
| Sucrose |
NP 2225 |
| Sugar Free Extract |
NP 2228 |
| Ash |
NP 2221 |
| Alkalinity of the Ash |
NP 2279 |
| Synthetic Organic Dyes Test (Acid Function) |
NP 2275 |
| Cyanidric Acid Derivatives Test |
NP 2446 |
| Anthocyanidin Dyglucosid Test |
NP 2276 |
| Sulphates |
Reg. CEE 2676/90 |
| Stability Test-Oxidase Change |
pr NP 4266 |
| Citric Acid |
Internal Method |
| Ascorbic Acid |
Internal Method |
| Chlorides |
Internal Method |
In addition to these tests and to
complement the analyses performed in the first
laboratory, this laboratory is responsible for confirming
the results obtained by the "rapid" methods in
the event of doubts or when those results exceed maximum
legal limits.
|