Neptune System's Replacement Reagent Kit comes with everything you need to change out the reagents for the Trident Marine Water Analyzing System. Each kit comes with new bottles that can be placed directly into the Trident's reagent holder and only takes a few minutes to exchange the old for the new. Amount of Tests: Based on the default testing schedule of 4x alkalinity, 2x calcium, and 2x magnesium tests per day, the reagent kit will last approximately 2-months before a new reagent is required. 240x Alkalinity Tests (reagent changed every month) 120x Calcium Tests (reagent changed every 2-month) 120x Magnesium Tests (reagent changed every 2-month) (This is based on the 2-month reagent kit testing) Note: Neptune Systems recommends keeping on hand no more Trident reagent than you might expect to consume within the next 12 months. What's Included? Reagent A Reagent B Reagent C Seawater Calibration Sample Replacement Reagent Kit for Trident NP (2 Month Supply) Keep your Trident NP Nitrate and Phosphate Tester running smoothly by replacing your reagents on time. This kit is easy to use with clear instructions for hassle-free reagent changes. These reagents ensure consistent and reliable results, covering a two-month testing period with one nitrate and one phosphate test per day. Note: Given the nature of the chemicals used in the Trident NP Reagents, they must be shipped upright and via ground shipping only. Using a Trident NP Waste Container or other container made of HDPE Class 2 plastic or glass is required (sold separately). What's Included? Calibration Solution NP Reagent 1 NP Reagent 2 NP Reagent 3a NP Reagent 3b Waste Neutralizer