Determine water hardness using photometric titration
This company’s Optrode sensors are designed to provide accurate and reproducible results for total water hardness in automatic photometric-titration processes. ASTM method D8192 describes the automatic determination of the calcium and magnesium content (hardness) of industrial and domestic water samples using a photometric sensor. In combination with a digital titrator, optical sensors, such as the Optrode, register the color change of the titrant automatically, providing accurate and reproducible results even for colored samples. Advantages of the new standardized measurement method include simplified maintenance — the sensor must only be rinsed prior to measurement. The Optrode sensor can be used with automated systems for high-throughput analysis. With the Optrode sensor, detection limits from 2 to 5 mg/L CaCO3 are feasible, enabling easy compliance with the requirements of ASTM D8192. Booth 436 (South Building) — Metrohm USA Inc., Riverview, Fla.