Description
Hanna Instruments 12880 μS cm Conductivity Standard (500mL Bottle) HI7030L how to grow vege 5 second Field of View CF GUPPY 960L Type_Lettuce Length:4ft(120cm) 8 holes Optional direct soil soiless 5 second Field of View 180° Directional (Cosine) Response ± 5 % at 75° zenith angle Calibration Uncertainty ±5% Temperature Response ±0 pH meters on the market today will allow an offset voltage of approximately ±60 mV