The Neptune Systems Trident Reagent Kit is a 6-month supply if you assume the default testing schedule of 4-Alk/2-Ca/2-Mg per day). There are three reagent kits includes. Each kit has at least 240 alkalinity tests and 120 tests each of Calcium and Magnesium.

Each of the THREE Kits includes:

• Two bottles of Reagent A (changed every month)
• One bottle of Reagent B (changed every two months)
• One bottle of Reagent C (changed every two months)
• One bottle of calibration seawater sample