EcoSense® pH Pen Digital pH Pen Options & Accessories:Calibration Solution (Set of 3) No assembly required

No assembly required

allowing for flexible rope configurations and increased holding strength

Caution: Highly Corrosive

A rotating nylon wand beneath the bulbs knocks the bugs into the water for your waiting fish

EcoSense® pH Pen Digital pH Pen Options & Accessories:Calibration Solution (Set of 3) No assembly requiredThe EcoSense pH Pen eliminates the need for cumbersome field kids to measure pH. It's the perfect instrument for economical spot sampling of pH and temperature in many applications, including wastewater, surface water, aquaculture, hydroponic pools and education. Waterproof Easily calibrated Batteries included 1 year manufacturer's warranty EcoSense pH pen and calibration solutions sold separately