The Complete Test Kit For Chlorine & PH is meant for use in Pools and/or Spas. The best way to keep your pool crystal clear this summer is to monitor the chemical levels in the water utilizing this complete test kit. In a matter of minutes you can understand a lot about your water that will ensure a safe and happy swimming experience. Having trouble with something in the kit? We invite you to visit or contact your local Boldt Pools and Spa where a customer service representative would be happy to aid you with any questions or concerns you may have. This handy kit comes with everything you will need to know about your water.