Lockable cap for easier and safe control,remove and twist. Adjustable bottom vents help for better preservation and release of chemicals.
bromine,
Taylor K-1004 DPD, 6-in-1 Pool Test Kit for for Free & Total Chlorine, Bromine, pH, Acid Demand, Total Alkalinity, 100 Tests, Quick & Easy for Pools & Spas | Made in The USA
Quick & Easy to Use Simply collect your water sample using the comparator and add the appropriate testing reagents to determine the results. Product instructions are written in non-technical language with easy-to-understand pictograms.