Purchase the meter and disks separately. The innovative WaterLink® Spin Touch® FF photometer does all your water testing for you. Each sealed reagent disk contains the precise amount of reagent needed to run a complete series of tests. Fresh and salt water disks available. Just fill one unique Spin reagent disk with less than 3 mL of water and all your vital tests are done automatically—in just 2 minutes! It’s the most advanced system for wet chemistry methods ever produced. These are not compatible with API Aquaspin disks So simple to use, no vials to fill, no prep time, no guessing! Sold in boxes of 50 disks. Return Policy: Items can only be returned if non-opened, unused and in original packing. *Due to high demand and limited availability, spin touch and spin disk quantities are currently limited to two units per customer. We appreciate your understanding. Data Logging Abilities: Stores Test Dates, Times, Results, and Location, Stand-Alone or Cloud-Connected, Touchscreen Operation, Connect to WaterLink Solutions via Bluetooth, Rugged and Portable, Innovative Water-Resistant Housing, Internal, Rechargeable Batteries. Freshwater Test Parameters: Alkalinity, Ammonia NH3, Hardness, Nitrate NO3, Nitrite NO2, pH, and Phosphate PO4.Saltwater Test Parameters: Alkalinity, Ammonia NH3, Calcium, Magnesium, Nitrate NO3, Nitrite NO2, pH, Phosphate PO4. Brackish Test Parameters: Alkalinity, Ammonia, Calcium, Magnesium, Nitrate, Nitrite, pH, Phosphate. Please Note: Brackish water tablets LAM3865-PKG are to be used in conjunction with saltwater spin disks LAM4354-H. Spin Touch Brochure Spin Touch Disk Specifications Spin Touch Instruction Manual Spin Touch Quick Start Spin Touch Informational Video