Hach COD measurement with DR3900 Spectrophotometer

[@PatcharinPreedawan]

thank you for video naka

[@rehansiddique7129]

Very informative vedio....

[@nuramalia5486]

What is the differences between the three COD program?

[@chotikalaksana5381]

measurement range of 3 programs are difference.

[@nanangsetiaji9118]

min mau tanya kalo yg erorr 35-5 itu kenapa ya?