Straight-line application
We purchased this at an auction and have not tried it but expect that it should work
Suitable For Use With: All Standard Threaded Products Such As Deck Brushes and Broom Blocks
and the only products using predator urine to be EPA-registered
Water Test Kit pH, nitrates, Fe Windchimes Straight-line applicationSimple to use test kit that will give you dependable and accurate results in minutes. Detects hardness, chlorine, PH, alkalinity, nitrates, nitrites, iron, and copper. This product contains 8 water test kits, a water sample test vial, 2 iron test tablets, complete instructions and an informative book to answer most questions.