Anionic surfactants are extracted with toluene and break up an ion pair, releasing bromphenol blue into a water layer. Using the drop count method, a standard color reagent is then used to determine the concentration. Range and sensitivity is 1 drop = 1.0 ppm Detergent.
|Detergent Test Kit Reagent Refill
|1 drop = 1.0 ppm Detergent
|60 at 5.0 ppm