Description
The HI93754B-25 COD kit contains 25 ready-to-use vials containing pre-measured reagents. These high quality reagents follow the EPA approved method 410.4.Hanna vials contain approximately 3 mL of pre-dosed reagent so the user simply needs to add a small quantity of the sample. With HI93754B-25 COD reagents
Comparison of Methods
This is a common requirement for wastewater treatment plants and food manufacturing facilities which tend to have higher concentrations of chloride present in their effluent. When using reagents that follow the EPA method, it is important to treat used vials as hazardous waste, as mercury waste requires recycling.
Mercury-free – For those who do not wish to handle mercury reagents, our “green,in. mercury-free reagents are available for COD determination. These reagents are more sensitive to chloride interferences, as mercuric sulfate is not present. While the mercury-free reagents are easier to dispose of, they may be unacceptable for reporting purposes.Containing similar chemical reagents as the EPA method, it is important to treat used ISO vials as hazardous waste, as mercury waste requires recycling.
| Method | Parameter | Range (as O2) | Resolution | Accuracy | Reagent COD |
| EPA | COD LR COD MR |
0 to 150 mg/L 0 to 1500 mg/L |
1 mg/L 1 mg/L |
±5 mg/L ±5% of reading ±15 mg/L ±4% of reading |
HI93754A-25 HI93754B-25 |
| Dichromate | COD HR | 0 to 15000 mg/L | 10 mg/L | ±150 mg/L ±3% of reading | HI93754C-25 |
| Mercury-free | COD LR COD MR |
0 to 150 mg/L 0 to 1500 mg/L |
1 mg/L 1 mg/L |
±5 mg/L ±5% of reading ±15 mg/L ±4% of reading |
HI93754D-25 HI93754E-25 |
| ISO | COD LR COD M |
0 to 150 mg/L 0 to 1500 mg/L |
1 mg/L 1 mg/L |
±5 mg/L ±5% of reading ±15 mg/L ±4% of reading |
HI93754F-25 HI93754G-25 |
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