Hanna Instruments, of Woonsocket, R.I., introduces the C 99 chemical oxygen demand (COD) analyzer. This new analyzer is a powerful multi-parameter, ion-specific meter ideal for municipal water/wastewater treatment facilities. It measures up to 36 parameters and is engineered to be easy to operate and provide accurate, consistent results. The measurement procedure is based on a well-established, closed-reflux colorimetric method over 3 ranges—0 to 150 mg/L, 0 to 1,500 mg/L, and 0 to 15,000 mg/L.