How to Calibrate the Horiba LAQUAtwin Compact Salt Meter - Salt11

The Salt11 is a portable, and compact salt meter that determines salt concentration utilising a unique ion-selective membrane. Samples can be placed directly on the distinctive flat sensor of the Salt11. This direct method simplifies the measurement process, saves time, and reduces sample waste.

To ensure highly accurate readings, you must calibrate the Salt11 periodically. This task takes under three minutes and dramatically increases the reliability of your salt concentration data.

Figure 1 Watch an Instrument ChoiceScientistCondition and Calibrate the How to Calibrate the Horiba LAQUAtwin Compact Salt Meter - Salt11 here.

How to Calibrate the Horiba LAQUAtwin Compact Salt Meter - Salt11

You will need;

• Horiba LAQUAtwin Compact Salt Meter Salt11
• Conditioning Solution
• 5.0% NaCl Standard Solution
• 0.5% NaCl Standard Solution

Insert Batteries

If this is the first time using the meter, you will need to insert the batteries. If not, skip to Sensor Conditioning.

1. Flipthe meter over, so that the LCD is facing down.
2. Lift the sensor tongue tip then slide the sensor away from the meter.
3. Insert the batteries, observing polarity.
4. Put the meter and sensor back together, ensuring to clip the sensor tongue tip back into place.

Sensor Conditioning

Before using the sensor for the first time or if your meter has been idle for several days, you will need to perform electrode conditioning. Otherwise, skip to Two-Point Calibration.

1. To condition, place a few drops of the conditioning solution into the measurement cell.
2. Close the protective lid.
3. Leave the sensor to condition for ten minutes.
4. After 10-minutes, clean the flat sensor in running water.

Two-Point Calibration 

1. Switch the meter on by pressing the power button.
2. Open the protective cover and place a few drops of the 0.5% NaCl Standard Solution onto the measurement cell, just enough to cover the sensor.
3. Close the cover and press the CAL button.
4. ‘CAL’ and the smiley face will blink on the LCD, and the calibration buffer will be displayed.
5. After the calibration is complete, CAL and the smiley will stop blinking, and the calibration value at 25°C displays for one second. After this, the meter automatically returns to measurement mode.
6. The first point of calibration is complete.
7. Open the sensor and remove the standard solution. If there is residual moisture on the sensor, remove by dabbing with soft tissue.
8. To perform the second point of calibration, we repeat the same steps as with the first point—this time, adding the 5.0% NaCl Standard Solution onto the cleaned sensor.
9. Press CAL.
10. ‘CAL’ and the smiley face will blink on the LCD. The calibration reading will be displayed.
11. After the calibration is complete, CAL and the smiley will stop blinking, and the measured value displays for one second.
12. The second point of calibration is complete. Clean off the buffer solution and start taking salt concentration measurements!

Conclusion

Robust and reliable, the Horiba LAQUAtwin Salt11 Compact Salt Meter is straightforward to use and maintain. Calibration is the key to accurate results, so by following the step-by-step calibration steps outlined above, you will ensure reliable results from your Horiba Salt11 meter.

For more information on the Horiba Laquatwin series of meter, or assistance with calibrating your Salt11, see the links below or contact us!

Additional links

• View the full features and specifications of the Horiba LAQUAtwin Compact Salt Meter Salt11 here.
• Browse the extensive range of Horiba meters available at Instrument Choice here.
• Watch ‘How to Calibrate the Horiba LAQUAtwin Compact Salt Meter Salt11’ again.
• Want to see what comes in the box? Watch an Instrument Choice Scientist ‘Unboxing the Horiba LAQUAtwin Compact Salt Meter Salt11’.