Sterisil® SMART Compliance R2A Water Testing Kit. EPA validated test method. Perfect for routine quarterly testing. Includes: (1) StandardCheck R2A Mail-In Water Test Kit -Shipping Included - 4 vials D-R2A-4 (1) MyCheck Waterline Test Kit (4 paddles) MC-4 (1) Citrisil Shock - 4 pk ECS-4