Why is the volume different for HR+ COD vials versus HR reagents?

Document ID

Document ID TE231

Published Date

Published Date 27/05/2017
Question
Why is the volume different for HR+ COD vials versus HR reagents?
Summary
Difference between COD HR and HR+ vials
Answer
High Range + (0-15,000 mg/L) vials use only 0.2 mL of sample versus the 2 mL of sample in the HR vials. The HR+ vials also have more digestion reagent than the HR vials. The HR+ results are then multiplied by 10 to account for this volume difference.