Aquasol AMB1D1000 COD Calibration Solution, This ready-to-use 100 mL solution is essential for calibrating chemical oxygen demand (COD) meters at a concentration of 1000 ppm. It ensures that your meters accurately measure COD levels, which is vital for assessing water quality in environmental, industrial, and treatment settings. Compatible with all standard COD meters, this solution helps uphold the precision necessary for regulatory compliance and effective water management. Use it to consistently achieve reliable and accurate COD measurements.