TOC Systems, Inc. Alkalinity/Direct Process Analyzer

For use with All Star TOC Analyzers Alkalinity/Direct Method Avoids Titrimetric/Colorime tric Procedures Reports Total & Phenolphthalein Alkalinity Requires No Probes Integrates with StarTOC Onboard Computer Interference - Free Analysis Completely Automatic Rapid Response (3 - 4 Minutes) Description: The Alkalinity/Direct Method overcomes the limitations of traditional alkalinity tests involving multiple endpoint determinations by titration and colorimetric measurements. Burettes, multiple standards, complicated and troublesome rotary valves dispensing metered volumes, etc. are all avoided. This method uses direct analysis of CO2 and continuously measures the following: Total Alkalinity, mg/Las CaCO3 Hydroxide Alkalinity, mg/L as CaCO3 Carbonate Alkalinity, mg/L as CaCO3 Bicarbonate Alkalinity, mg/L as CaCO3 Free Carbon Dioxide, mg/L as CO2 The sample is delivered into a reaction chamber and mixed with acid to lower the pH to 2–3, at which point the species listed above are converted to CO2 . The CO2 is measured by the non-dispersive Infrared Analyzer and displayed as Total Alka linity and Phenolpht halein Alkalinity.