The number of tests available with the FAS/DPD chlorine test can vary widely.
If you have normal chlorine (say, 4ppm) chlorine levels you will use 8 drops or about 90 tests. However, if you have a green pool and are holding shock level, you may easily use 40 drops per test and test every day....maybe more. This reagent varies more than any other so you may want to consider ordering extra if you anticipate a need.
This bottle will not fit inside the K-2006 box, but can be uesed to refill your smaller R-0871 bottle