Free and Total Sulphur Dioxide

SKU
Free and Total Sulphur Dioxide
£130.00
Contact Us

  • Preferred contact Method:

  • Telephone

We will use the email address provided above to contact you about this service within 2 working days

Free and Total Sulphur Dioxide
  • Method Used
    Iodometric Titration
  • Minimum Sample
    200 ml
  • Minimum no. of samples required
    4
  • Standard Turnaround
    10 working days

Fera’s leading food scientists can analyse your wine samples and quantify the levels of sulphur dioxide (SO2) present. While naturally present in wine produced as a fermentation by-product, sulphur dioxide (SO2) can also be added to wine during the pre bottling stage of production to preserve products during storage. SO2 protects a winemaker’s product from the negative effects of oxidation and spoilage microorganisms.

Although common practise, throughout the world there are regulations concerning the levels of SO2 in wines, and it is mandatory for any wine containing more than a total SO2 content of 10 mg/L to display ‘contains sulphites’ on the label. Wines are also subject to a legal limit for SO2, which in red wine is 150 mg/L and in white wine it is 200 mg/L. These limits are specified by the International Code of Oenological Practices (OIV Code Sheet, Issue 2015/01, XXXVII. ANNEX: MAXIMUM ACCEPTABLE LIMITS).

Fera wine testing can ensure that levels of SO2 are within the legal limits, and also that any products which do not have the ‘contain sulphites’ label are below the 10mg/L requirement.

At Fera the test for sulphur dioxide levels in wine is undertaken with iodometric titration, and we are able to offer rapid analysis with a typical 10 day turnaround from receipt of your samples by our scientists.

Although we primarily utilise these methods within our wine authenticity analysis activities, we are able to conduct this analysis across a range of samples to provide the authenticity analysis you require. Contact us to meet your bespoke requirements.


Submitting your Sample

To undertake this test, we require a batch size of at least 4 samples. Samples should be of at least 200mL and be provided in a full and sealed bottle.

When submitting your sample please include the food sample submission form to allow us to process your samples efficiently. Failure to send a sample submission form may result in a delay of your sample being tested.

Download the food sample submission form here.

Detail

Specification

Method

Iodometric titration

Accreditation

None

Sample Information

Each sample should be at least 200 mL and be provided in a full and sealed bottle

Minimum Sample Quantity (Batch Size)

4

Turnaround Time

10 working days

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