TN Low Level Total Alkalinity per SM2320

This technical note outlines the procedure for measuring low-level total alkalinity in water using a Thermo Scientific Orion Star T9102 pH titrator. The method involves titrating with 0.02N sulfuric acid to pH endpoints of 4.5 and 4.2, then calculating alkalinity as mg/L CaCO3. It includes equipment and sample preparation instructions, programmed parameters for titration, and guidelines for standardizing the titrant for accuracy.