Analysis of titratable acidity in wine, as performed on the HI84502 mini titrator, utilizes a simple sample preparation, a high-quality titrant dosing pump, potentiometric endpoint detector, and automatic computations. As the titrant comes pre-standardized, it is important to determine the amount of titrant delivered by the dosing pump by performing a pump calibration procedure. In this procedure, the analysis of a known volume of a known solution is titrated with to the pH 8.2 endpoint determined by the HI1048B pH electrode. The same pump calibration solution is used for both the low and high ranges. The pump calibration procedure should be performed anytime the titrant, syringe, tubing or pH electrode is replaced. It is recommended to do a pump calibration every time a new set of titrations are to be performed.

 

Replacement reagents required to operate the HI84502 include:

	Low Range - 0.1 to 5.0 g/L of tartaric acid High Range - 4.0 to 25.0 g/L of tartaric acid
Pump calibration standard	HI84502-55
Titrant solution	HI84502-50