The HI98311 is an advanced, waterproof conductivity and TDS (ppm) tester for quick and easy measurements while on the go.  This lightweight, waterproof conductivity tester offers accurate conductivity (0 to 3999 µS/cm), TDS (0 to 2000 ppm), and temperature measurements in a single, portable, pocket device. No more switching between meters for your routine measurements.

• Compact & waterproof design fits right in your pocket so you can take it anywhere.

• Replaceable graphite electrode extends the life of your tester for years.

• Great for hydroponics, aquariums, pools, & pond.