Vintessential: Free Sulfur Dioxide Test Kits for Wine

Sulfur dioxide is used as a preservative in wine and there are restrictions limiting the amount that can be added in most wine producing countries. This test kit is a fast and easy way to determine the amount of free sulfur dioxide in wine samples, without the need for the laborious setup associated with traditional methods. Additionally, unlike some other commercial products this test kit does not contain formaldehyde, which is a known carcinogen.

The amount of sulfite present in wine is measured by monitoring the reaction with a chromogen under acidic conditions. The reduction of the chromogen leads to formation of a strongly absorbing compound which can be measured at 340 nm. The measured amount of the activated chromogen is stoichiometrically proportional to the amount of free sulphite present.

Free Sulfur Dioxide 30 Test kit

Product Code: 4A190

Please note these tests require the use of a spectrophotometer and semi-micro cuvettes.

Reagent No.	Reagent	Preparation	Quantity	Stability
1	Buffer	Ready to use	33 mL	Stable
2	Chromogen	Ready to use	17 mL	Stable
3	Standard	Refer to standard preparation procedure	2 x 74 mg	Stable as supplied

Items required but not supplied

Download Instructions

Download Calculation Worksheets

Free Sulfur Dioxide Auto Test Kit

Product Code: 4B190

This kit has been designed to work with a Discrete Analyser. Get in touch for more information or a quotation.

Reagent No.	Reagent	Quantity	Storage
FSO2 R1	Buffer	4 x 20.0 mL	At 4°C – Expiry on Label
FSO2 R2	Chromogen	2 x 11.7 mL	At 4°C – Expiry on Label
FSO2 BL	Blank	2 x 11.7 mL	At 4°C – Expiry on Label