Swimline Hydrotools Replacement Ph Phenol Water Testing Drops
Replace your test drops every season to make sure test results are accurate. The Swimline Hydrotools 1/2 oz Replacement Ph Phenol Water Testing Dropswill test the level of Ph in the water when used with a Swimline Water Testing Kit.
Add the Swimline OTO Water Testing Drops for a chlorine testing.
Testing Kit not included.