The NT Labs Pond Salt Tester will test the level of salt in you pond which is great for accurate dosing of your koi fish pond.
-Calibrated in ounces per gallon at 60 degrees farenheit
-Can be used directly in pond or for greater accuracy in a sample
-Tests up to a maximum treatment level of 4.5 ounces per gallon
-No Thermometer
-Full instructions provided