... Pen Type PH Meter 1. This PH Meter with temperature display 2. This PH Meter with buffer solution Hydroponics Red Pen Type PH Meter Item ... display,Range:0-14.00,PH:0-55°C2)Accuracy: ±0.1,PH: ±1 °C 3)Resoluting:0.01, PH:0.1 °C 4)Operating Temp ... display,Range:0-14.00,PH:0-55°C2)Accuracy: ±0.1,PH: ±1 °C 3)Resoluting:0.01, PH:0.1 °C 4)Operating Temp ...