What is the procedure for testing bromine in water?
Hach offers bromine methods which use total chlorine DPD to determine bromine. Method 8016 can be used on Hach spectrophotometers and colorimeters. Hach also offers a Pocket Colorimeter™ II, Bromine (catalog number 5870001). A total chlorine test can also give results for bromine. The total chlorine result is multiplied by 2.25 to give the result in mg Br/L. Note that bromine may also be an interference for free chlorine tests but these cannot be used to give an accurate bromine result. If a free chlorine DPD test is performed bromine will show up very low or not at all.