Introduction

Sulphur dioxide has been added as a preservative to alcoholic drinks for hundreds of years. They are referred to as "Sulphites". The amount added is strictly controlled by legislation.

Recently it has caused much concern because sulphites in wine can cause health effects. Because of this, manufacturers are trying to reduce the concentration of sulphur dioxide.

Methods to calculate the sulphite concentration have been developed, this allows them to confirm that the drink contains enough preservative to be kept fresh for a reasonable time, but it won't affect the taste and it won't exceed the legal limits.

chathamkiwanis.blogspot.com