Calibration WaterBoy
Only with the correct calibration and appropriate calibration liquids can you obtain accurate measured values for pH value and conductivity!

Calibrate correctly
Our WaterBoy dual measuring device must be calibrated regularly in order to provide accurate values for the VDI 2035, ÖNORM H 5195-1 and SWKI BT 102-01 standards:
- pH calibration: every 5 days
- Conductivity calibration: every 14 days
The WaterBoy app helps you with precise instructions on how to proceed correctly during calibration.
Perform calibration with the UWS WaterBoy app
- To do this, switch to the desired tab (μS or pH)
- If the calibration is invalid or has expired, the message ‘Device must be calibrated’ is highlighted in red at the bottom.
- If the calibration has expired, please recalibrate the respective measuring probe.
- Click on ‘Calibrate’ for step-by-step instructions on calibration.
- Important: As soon as the device has been calibrated to a calibration solution, the app jumps out of calibration again. To calibrate another point, click on ‘Calibrate’ again and follow the instructions.
- The date of the calibration and the calibrated points are displayed after successful calibration.
A detailed description of how to calibrate the UWS WaterBoy without the app can be found here in the instructions.

The following calibration liquids are available:
Calibration fluid Conductivity | ||
Article | Article content | Species number |
Conductivity solution 84µS / cm | 120 ml bottle | 100030-8 |
Conductivity solution 1413 µS/cm | 25 bags of 20 ml | 100030-2 |
Conductivity solution 1413 µS/cm | 500 ml bottle | 100030-25 |
Calibration liquid pH | ||
Buffer solution pH 4.01 | 25 bags of 20 ml | 100030-3 |
Buffer solution pH 4.01 | 500 ml bottle | 100030-30 |
Buffer solution PH 7 | 25 bags of 20 ml | 100030-1 |
Buffer solution PH 7 | 500 ml bottle | 100030-15 |
Buffer solution pH 10.01 | 25 bags of 20 ml | 100030-7 |
Buffer solution pH 10.01 | 500 ml bottle | 100030-70 |
Cleaning and storage solution | ||
Storage solution for electrodes | 25 ml bottle | 100125 |
Storage solution for electrodes | 230 ml bottle | 100145 |
Storage solution for electrodes | 500 ml bottle | 100135 |
Cleaning solution for electrodes | 25 bags of 20 ml | 100030-6 |
Cleaning solution for electrodes | 500 ml bottle | 100136 |
Replacement set “WaterBoy” measuring case | 10 pcs. | 100153-1 |
We also offer the following measuring and test equipment:
article | Item number |
Measuring set for measuring water hardness | 100032 |
Chloride test kit | 100130 |
Test cutlery iron | 100131 |
Nitrate test kit | 100133 |
Sulphate test kit | 100134 |
Measuring cup 50 ml | 100030-4 |