Hanna Instruments GroLine PH/EC&TDS Combo Tester HI98131 germination Immerse the block in water

Immerse the block in water and when it has expanded

The battery icon will blink to let you know it is time to change the battery so you never miss a measurement

Low EC at 0

If necessary

Water Level x 1set

Hanna Instruments GroLine PH/EC&TDS Combo Tester HI98131 germination Immerse the block in waterWaterproof Automatic temperature compensation Automatic calibration Replaceable pH electrode cartridge High accuracy graphite EC TDS probe Calibrate pH and EC with one solution Hanna Warranty: 1 year for meter, 6 months for probe Product Specifics: This 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