Alkalinity Titrator Information

There are several general purpose acid-base titrators available commercially. The Apollo SciTech's AS-ALK2 is one that truly automates the Gran titration procedure (include controlling the titration and standardization procedures and the calculation of the final result). AS-ALK2 is designed for both laboratory and shipboard use with small sample volume (5-25 mL) and high precision (0.1%). The titrator is fully-automated with standardization and sample analysis. AS-ALK2 provides Gran titration for alkalinity determination of both seawater and brackish waters. AS-ALK2 also provides full scale pH titration such as that used for determining surface binding properties of humic substances. Full temperature control is provided on all liquids.

Front view of the Total Alkalinity Titrator main unit, model AS-ALK2.

The Total Alkalinity Titrator system, model AS-ALK2. Water jackets are used to surround the digital syringes for temperature control. For best data quality, a water bath must be used to supply water with a constant temperature to control the titration temperature.