This is a Taylor Reagent Package in 16 ounce size for pH, Hardness, Alkalinity, CYA, item K-7066-E. This pack contains R-7064-E, R-7065-E, R-7063-E, R-7062-E for alkalinity, cyanuric acid, hardness, and pH.
This reagent package is an economical choice for large facilities doing testing. Saves on purchasing the 2 ounce bottles.