The Hanna GroLine Hydroponic Waterproof Pocket pH/EC/TDS/Temperature Tester (HI98131) is a slim, lightweight, and waterproof pocket sized meter that measures pH, conductivity (EC), total dissolved solids (TDS) and temperature. The meter operation is simplified with two buttons. One is used for on/off and for calibration while the other is used to switch between the measurement modes. The Hanna GroLine Hydroponic Waterproof Pocket Tester has advanced features including a selectable EC to TDS conversion factor (0.5 - 500 ppm and 0.7 - 700 ppm).

The GroLine Hydroponic Waterproof Pocket Tester features a large multi level LCD which displays both pH, EC or TDS and temperature readings simultaneously. The pH readings are displayed with a 0.01 resolution and with an accuracy of +/-0.05 pH, while the EC and TDS readings are displayed with a 0.01 mS/cm and 10 ppm (mg/L) resolution and 2% full scale accuracy. The EC range of the GroLine Hydroponic Waterproof Pocket Tester is from 0.01 to 6.00 mS/cm and TDS is from 0 to 3000 ppm using a 0.5 conversion factor.

The GroLine Hydroponic Waterproof Pocket Tester also offers the option to use a 0.7 (700 ppm) EC to TDS conversion factor. An exposed temperature sensor allows for rapid temperature compensated measurements of EC and TDS. The LCD screen has indicators for calibration status and stability. The battery percent level is displayed at start up alerting the user to the remaining battery power that is available. The GroLine Hydroponic Waterproof Pocket Tester is a versatile pocket meter designed for hydroponics, greenhouse and agriculture applications.

• pH Range: 0.00 to 14.00 pH
• pH Resolution: 0.01 pH
• pH Accuracy: ±0.1 pH
• pH Calibration: automatic, at one or two points using standard buffers (pH 4.01, 7.01,10.01); one point calibration using quick calibration solution
• Conductivity Range: 0.00 to 6.00 mS/cm
• Conductivity Resolution: 0.01 mS/cm
• Conductivity Accuracy: ±2% F.S.
• TDS Range: 0 to 3000 ppm (500 CF); 0 to 3999 ppm (700 CF)
• TDS Resolution: 10 ppm (mg/L)
• TDS Accuracy: ±2% F.S.
• Temperature Range: 0.0 to 60.0°C / 32.0 to 140.0°F
• Temperature Resolution: 0.1°C / 0.1°F
• Temperature Accuracy: ±0.5°C /±1°F
• Temperature Compensation: pH: automatic; EC/TDS: automatic with β set at 1.9%/°C
• EC/TDS Calibration: automatic, one-point at 1.41 mS/cm or 5.00 mS/cm; one point calibration using quick calibration solution
• TDS Conversion Factor: 0.5 (500 ppm) or 0.7 (700 ppm)
• Battery Type/Life: 1.5V (4) / approx. 100 hours of continuous use, auto-off after 8 minutes of non-use
• Auto-off: after 8 minutes, 60 minutes, disabled
• Environment: 0 to 50°C (32 to 122°F); RH max 100%
• Dimensions: 163 x 40 x 26 mm (6.4 x 1.6 x 1.0’’)
• Weight: 100 g (3.5 oz.)
• Warranty: 1 year