Milwaukee MW806 - MAX 4-in-1 pH/EC/TDS/Temp. Combo Meter w/ATC, 0.00-20.00 mS/cm, 0.00-10.00 ppt (g/L) | TEquipment
Amazon.com: Milwaukee BEM802 Combination pH/EC/TDS Meter with 110V Power and Mounting Kit, 0.00 to 14.00 pH, +/-0.20 pH Accuracy : Industrial & Scientific
Milwaukee MW151 MAX pH/ORP/Temp Logging Bench Meter | MoreWine