China economical 15mL chemical oxygen demand vials with cap
Chemical Oxygen Demand (COD) Testing Kits | CHEMetrics
A COD test typically involves digestion of a water sample in a sealed vial with potassium dichromate and sulfuric acid at 150oC for 2 hours. Why test for COD?
Oxygen Demand, Chemical – Hach
Install the instrument cap on the DR900 cell holder before ZERO or READ is vial. 2. Oxygen Demand, Chemical, Dichromate Method (multi-range: 40.0, 150, …
Chemical Oxygen Demand (COD) TNTplus Vial Test, HR (20 – Hach
Hach’s USE...