
Chemical Oxygen Demand reagent systems used with the COD PLUS Colorimeter, SMART2 Colorimeter, or SMART Spectro Spectrophotometer are an easy and precise way to measure COD levels. Low, medium or high levels of COD can be selected using your choice of mercury (USEPA approved method) or non-mercury reagent systems.
| Part Number | PPM Range | Mercury | Approved | Quantity |
| LA-0075-SC | 0 - 150 ppm | With Mercury | EPA Approved | 25 Tests |
| LA-0076-SC | 0 - 1,500 ppm | With Mercury | EPA Approved | 25 Tests |
| LA-0077-SC | 0 - 15,000 ppm | With Mercury | - | 25 Tests |
| LA-0072-SC | 0 - 150 ppm | Without Mercury | - | 25 Tests |
| LA-0073-SC | 0 - 1,500 ppm | Without Mercury | - | 25 Tests |
| LA-0074-SC | 0 - 15,000 ppm | Without Mercury | - | 25 Tests |
Related equipment we stock

Secchi Disk
20 cm diameter | Black & White quadrants | Calibrated line to 20 m | Marked at 0.5 m & 1 m intervals | Weighted parallel-sinking disk

Hanna Instruments GroLine Monitor for Hydroponic Nutrients HI981420
pH Range: 0.00 to 14.00 pH | EC Range: 0.00 to 10.00 mS/cm | Temperature Range: 0.0 to 60.0°C / 32.0 to 140.0°F | pH Resolution: 0.01 pH

9829 Multiparameter Water Quality Meter
pH 0–14 ±0.02 | DO 0–500% sat ±1.5% | EC 0–200 mS/cm ±1% | Turbidity 0–1000 FNU ±2% | IP67 meter / IP68 probe | 44,000-sample logger | Up to 140 h battery

Hanna Instruments edge® Multiparameter Meter
pH -2.000 to 16.000 | EC 0.00–500 mS/cm | DO 0.00–45.00 mg/L | 202×140×12.7 mm, 250 g | Data logging 1,000 records, 8-hr battery