Neptune reagent for Neptune Trident Kit of 2 -month reagents (based on the standard test program of 4x Alk / 2x CA / 2X mg per day.) The reactive kit contains at least 240 alkalinity tests and 120 tests each for calcium and magnesium. Neptune advises not having more reagent in stock than necessary for 1 year. The Trident reagent kit includes: two reagent A (replacement A (to be replaced) a reagent bottle B (to be replaced every two months) a reagent bottle C (to be replaced every two months) sample of calibration water for a bottle