Ohaus ST300 Portable pH Meter The Starter 300 combines portability with precise pH measurement. With a meter stand, wrist strap for secure field use, and IP54 housing, the meter is durable and prepared for versatile use. Automatic and manual temperature compensation ensures accurate readings while a 30 measurement library stores data for future reference. The auto buffer recognition stores calibration data and helps to avoid errors during the calibration process. Packages - Available in three configurations: ST300-B ST300 ST300-G 300 Meter with IP54 Sets Electrode Clip Wrist Strap 4 AAA Batteries Electrode Not Included 300 Meter with IP54 Sets Electrode Clip Wrist Strap 4 AAA Batteries ST320 3-in-1 Plastic Gel Electrode pH Buffer Sachet 300 Meter with IP54 Sets Electrode Clip Wrist Strap 4 AAA Batteries ST320 3-in-1 Plastic Gel Electrode pH Buffer Sachet Portable Bag Specifications: Measurement Range: 0 – 100°C; 0.00 – 14.00 pH; -1999 – 1999 mV Measurement Resolution: 1 °C; 0.01 pH; 1 mVDisplay: LCD Accuracy ±: ±0.5 °C; ±1 mV; ±0.01 pH Display: LCD Electrode: ST320 (Not included in ST300-B) Accuracy ± (mV): 1 mV Battery Life: 500 Hours with Disposable Batteries Calibration: 3-point Dimensions: 38 in x 6.69 in x 3.54 in (35 mm x 170 mm x 90 mm) (HxLxW) In-Use Cover: No Measurement Range (Temperature): 0 °C ; 100 °C Measurement Range: -1,999 mV ; 1,999 mV Net Weight: 35 lb (0.16 kg) Parameter: pH/ORP pH Accuracy: 01 pH Measuring Range: 0 ; 14 pH Resolution: 01 Power: 4 AAA (LR03) Batteries (Included) Resolution (Voltage): 1 mV Temperature Compensation: Yes Temperature Resolution: 1 °C Temperature Sensor: 30 KΩ NTC Working Environment: 41°F – 104°F, 80%RH, non-condensing (5°C – 40°C, 80%RH, non-condensing) Starter Series Data Sheet ST300 Manual