Determination of Total sulfur dioxide (SO2) in Beer
CDR BeerLab® allows to determine Total sulfur dioxide (SO2) in beer giving the result in 1 minute, avoiding the time consuming distillation of the EBC reference method and the using of dangerous and cancerogenic compounds used by AOCS reference method.
You can use CDR BeerLab® method easily in the QC lab or even at production line.
SO2 is naturally produced in the fermentation steps of beer production. Given its antioxidant capacity it allows to extend the shelf life of the beer itself . The legal limit is 10 mg/L.
The systems to test Total sulfur dioxide (SO2) in beer
Bitterness levels can be measured using CDR BeerLab®, a system which enables you to carry out a wide panel of chemical analyses on beer and water, using a single instrument, in a process that is faster and simpler than traditional methods.
With CDR BeerLab® brewers and breweries of any size can independently carry out brewing process controls without having to rely on external laboratories.
 CDR BEERLAB® |
 CDR BEERLAB® JUNIOR |
|
|---|---|---|
| Analyses |
Beer and Wort: Bitterness (IBU) Fermentable Sugars Alcohol by Volume (ABV) Acetic acid Yeast Vitality Vicinal Diketons (VDKs) Total sulfur dioxide Free Amino Nitrogen by OPA (FAN) Colour Starch pH Lactic Acid (D + L) Polyphenols in beer Alkalinity of water Bicarbonate in Water Calcium in Water Zinc in Water Sulfate in Water Magnesium in Water Potassium in Water Chloride in Water |
Configuration with tailored panel of analyses |
| Simultaneous Sample Analyses | 16 | 3 |
| Multiple Analyses on a Sample |  |
– |
Method
Test type: End Point.
Time testing: 1 minute.
Are possible test sessions with several samples, up to 16 for CDR BeerLab® and 3 tests for CDR BeerLab® Junior.
Calibration curve
Calibration curve obtained with samples of known values.
Test Principle
Total SO2 reacts with a specific cromogen forming a compound used to follow the reaction itself. The end point of the reaction is read at 430nm and the increasing of absorbance is proportional to the total SO2 concentration.
Reagent test Kits
The reagents are packaged in foil pouches containing 10 tubes useful to perform 10 analyses.
This is the minimum package that allows the use of CDR systems even to those who need to make a few analyses, thus not wasting reagents.
There are also boxes of 100 tests, however, packaged in 10 bags of 10 tubes containing the reagent.
- Codice *300865 – The kit, designed for 10 tests
- Codice *300860 – The kit, designed for 100 tests
The reagents have a shelf-life of 18 months.
Processing – Sample Volume – Measuring Range
Collect the beer after a short degassing step
| Analysis | Measuring range | Resolution | Repeatability |
|---|---|---|---|
| Total sulfur dioxide (SO2) | 1 – 30 ppm |
0.1 ppm | 0.2 ppm |
