This document provides the instruction manual for Hanna products, including the correct usage of COD reagents, differentiation of reagent kits for different COD ranges, and the characteristics of the reagents.
This manual provides instructions for using Hanna Instruments' HI 93754A-25 LR, HI 93754B-25 MR, and HI 93754C-25 HR reagent kits to determine Chemical Oxygen Demand (COD) in surface water, domestic, and industrial wastes. The kits are adapted from the EPA 410.4 approved method and contain 25 ready-to-use vials with premeasured reagents for low, medium, and high COD ranges.
| Low Range (LR) Limit | 0 to 150 mg/l |
|---|---|
| Medium Range (MR) Limit | 0 to 1500 mg/l |
| High Range (HR) Limit | 0 to 15000 mg/l |
| Digestion Temperature | 150°C |
| Digestion Time | 2 hours |
| Sample Volume (LR/MR) | 2 ml |
| Sample Volume (HR) | 0.2 ml |
The vial identification color for the Low Range kit (HI 93754A-25 LR) is RED.
The vial identification color for the High Range kit (HI 93754C-25 HR) is GREEN.
No, do not use an oven or microwave because leaking samples can generate a corrosive and possibly explosive atmosphere.