Hach TNTplus 821 COD mid-range 3-150 mg/L, dilution-tolerant reagent variant.
Hach TNTplus 821 COD mid-range 3-150 mg/L, dilution-tolerant reagent variant.
| Part | TNT821 |
| Method | Dichromate |
| Range | 3-150 mg/L |
| Accuracy | ±5% |
| Vials | 25 per pack (standard) / 100 per pack (chlorine pillows) |
| Required equipment | Hach DR-series photometer / spectrophotometer + DRB200 heater (digestion tests) |
| MOQ | 1 |
All TNTplus vials use 16mm test-tube format with auto-recognition barcode on DR900/1900/6000.