TitriLyzer™ TH + Alk

Interested in this application?

Request info Services

TitriLyzer™ TH + Alk

On-line Total Hardness + Alkalinity Analyzer

The TitriLyzer™ Series of On-line Titrimetric Analyzers are state of the art titration systems equipped with a high precision dispenser system and other quality components, controlled by AppliTek’s proprietary controller software. Ease-of-use, robustness and analytical performance are key to each and every model of the TitriLyzer™ Series, available at an attractive price/quality ratio.

Total hardness levels can be an important water quality index in the feed water chemistry of power plants or reverse osmosis systems, as well as for finetuning the dosing of antiscalants. Often conductivity sensors are used to monitor the saturation point of the feed water. Although conductivity does correlate to the level of all dissolved solids, it cannot provide exact concentrations of calcium and/or magnesium ions. Alkalinity values on the other hand, can come from carbonate or bicarbonate ions, and can also be indicative of increased scaling risks in these areas.

The Total Hardness + Alkalinity configuration of the TitriLyzer™ runs a sequence of two distinct titrimetric techniques: one acid-base titration by a combined electrode for alkalinity, one colorimetric titration to determine hardness, in a single titration vessel. The combined measurement of the two parameters centralized in one single analyzer is a convenient solution for operators and eliminates additional space and purchase of a second analyzer.

Mainframe possibilities

  • Total hardness + alkalinity
  • Calcium hardness only (by colorimetry: EnviroLyzer™ Series)
  • Total hardness only (calcium + magnesium, titration or colorimetry)
  • Alkalinity only
  • TA/TAC (PA/MA) only


The TitriLyzer™ is also known as the Hach EZ4000/5000 Series.

Flexibility in titration methodology

Straight-forward design, single methodology, single parameter, factory set measuring range

Complete separation between electronics and wet part

Smart features and add-on units reduce down-time and unnecessary checks substantially

Up to three (6) sampling points possible

Incorporated industrial PC with AppliTek controller software

Extended data communication and exchange features

Total hardness + Alkalinity

(TH) 50 – 1000 mg/L as CaCO3 ; (Alk) 50 – 300 mg/L as CaCO3

Calcium hardness

0 – 100 µg/L as CaCO3 (by colorimetry) ; 0 – 1000 mg/L as CaCO3 (by titration)


Several ranges available