HI-84500-55 Calibration Standard for Sulphur Dioxide Mini Titrator for wine analysis, 120mL

A calibrated dosing pump allows for the accurate determination of the amount of titrant used when performing a titration. The amount of volume dosed along with the concentration of the titrant is used by the pre-programmed formula within the HI-84500 in determining the exact concentration of sulphur dioxide. The pump calibration procedure should be performed anytime the titrant or ORP electrode is replaced.

Calibration Standard for HI-84500-02 mini titrator for wine analysis.

Analysis of sulphur dioxide in wine, as performed on the HI-84500 mini titrator, utilises a simple sample preparation, a high quality titrant dosing pump, potentiometric endpoint detector, and automatic computations. To maintain the high precision of the titrator, a simple pump calibration procedure is performed with HI-84500-55 pump calibration solution. The pump calibration procedure involves the analysis of a known volume of a known solution. The pump calibration procedure should be performed anytime the titrant, syringe, tubing or ORP electrode is replaced. Periodic calibrations should be performed in order to accurately determine the free and total sulphur dioxide levels in wine.

The HI-84500 determines the free and total sulphur dioxide concentration in wine using the Ripper method. Excess iodide is added to the wine sample and reacts with the iodate titrant to produce iodine:

IO₃- + 5I- + 6H+ → 3I₂ + 3H₂O

The iodine produced reacts with sulphur dioxide in the wine according to the redox reaction below:

H₂SO₃ + I₂ → H₂SO₄ + 2HI