This document is an instruction manual for the HI 84430 TOTAL ACIDITY MINITITRATOR & pH METER. It provides information about the specifications, usage, calibration procedures, and troubleshooting guide of the instrument.
The HI 84430 is an easy-to-use instrument designed for the rapid and accurate analysis of Total Titratable Acidity in water. It functions as both a titrator and a pH meter, utilizing potentiometric end-point determination to eliminate subjective factors associated with color indicators.
The device features a clear user interface, a dedicated HELP key, and automatic pump operation initiated by a single START key press. It includes built-in algorithms for analyzing pH responses and calculating acidity results in units such as mg/L or meq/L as CaCO3.
| pH Range | -2.0 to 16.0 pH / -2.00 to 16.00 pH |
|---|---|
| pH Resolution | 0.1 pH / 0.01 pH |
| Titratable Acidity Range (Low) | 15.0 - 500.0 mg/L as CaCO3 |
| Titratable Acidity Range (High) | 400 - 4000 mg/L as CaCO3 |
| Pump Debit | 0.5 ml/min |
| Stirring Speed | 600 rpm |
| Temperature Range | -20.0 to 120.0 °C (-4.0 to 248.0 °F) |
| Temperature Accuracy | +/- 0.4 °C without probe error |
Total acidity determination uses an alkaline reagent titrated to a pH 8.3 endpoint.
Strong acidity is determined by titrating water samples with an alkaline reagent to a pH 3.7 endpoint.