Hanna pHep pH Meter spl_fluence • OMRI listed for organic

• OMRI listed for organic gardening

plus a CO2 sensor and CO2 control switch

The digital light meter accurately measures to 40

This CMh 315 ballast is silent

Allows water to evaporate more evenly

Hanna pHep pH Meter spl_fluence • OMRI listed for organicWaterproof pHep pH Tester The Hanna Instruments HI98107 pHep pH tester is a rugged and reliable pocket sized tester for use in the lab or field. This modern looking meter is only 0. 7" thick and extremely ergonomic, fitting comfortably in your hand. This tester keeps things simple with a two button operation; one for ON OFF, the other for Calibration. The HI98107 tester features a large multi level LCD which displays both pH and temperature readings