Milwaukee Instruments pH WP Waterproof pH Tester spl_ps Works great with Plantmax 315W

Works great with Plantmax 315W CMH PGZX18

results in an overall improved plant growth PRO-MIX HP-CC MYCORRHIZAE™ is suitable for a wide variety of horticultural plants

change reservoirs every seven to ten days

Optimal air to water ratio

They are designed with true solar symmetry for true photochemical reactions in living organisms

Milwaukee Instruments pH WP Waterproof pH Tester spl_ps Works great with Plantmax 315WRange 2. 0 to 16. 0 pH Resolution 0. 1 pH Accuracy 0. 1 pH ATC automatic Calibration 2 points automatic User select 6 buffer types Environment 32 122F (0 50C) Display LED & push to hold Auto Off after 8 minutes of non use Battery life 300 hours of use Battery type 1. 5V button 4 Included Unit is labeled "Martini Instruments". Martini Instruments is a laboratory equipment division of Milwaukee Instruments.