| Hanna Part No: HI-9813-6
A common pH electrode provides an output signal equal to 0 mV if immersed in a solution at pH 7. This output value can also be obtained in case of anomalies such as:
A broken bulb in the pH electrode
A short circuit in the cable or connector
Magnetic force leakage in the cable or connector (for example, in case of excessive humidity)
In these conditions, an instrument will show a false reading of pH 7 on the display, so the user isn't able to identify that corrective measures are necessary. To avoid this problem, Hanna instruments developed new F.S.T technology for the new HI-9813-6
With this special security system, if the meter encounters incorrect readings, the instrument doesn't display values close to pH 7, but close to pH 4, making the problem clear to the user.
To allow maximum confidence in your measurements, the meter is equipped with two LEDs and a Check button. When pressing this button, after immersing the electrode in the proper solution, HI-50021P (Cal-Check solution), one of the LED's will light up to indicate the status of the meter. The green LED ("OK") indicates the probe is working correctly, while the red LED ("C&C" clean & Cal) indicates the electrode needs attention.
The HI-9813-6 is supplied complete with pH/EC/TDS/T HI-1285-6 probe with 1m cable, pH7, 1.41 mS/cm and 1500ppm calibration solution (20ml each), cleaning solution (2pcs) HI-50021 test solution (2pcs), blue protective case, battery and instructions.
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