pH measurements

The pH measurement indicates the pH level in your pool or spa. Variations in pH readings can be normal: they can fluctuate depending on the weather or swimming. ICO can detect changes between two consecutive measurements. On this page, we explain the possible causes of variations in pH readings.

Sensors use conditions

• The ICO pH sensor is a component with a limited lifespan , guaranteed by Ondilo for 1 year. Beyond this period, and in any case after a maximum of 24 months, it is strongly recommended to replace the sensor. If incorrect measurements are observed between the end of the first year of use and the 24-month limit, it is imperative to replace your pH (or ORP) sensor with a new pH sensor to ensure data accuracy.
• The Ondilo sensors, including the pH sensor, must be used in accordance with the conditions specified in our recommendations for use. This includes, among other things, the regular calibration of sensors as well as compliance with storage conditions when winterizing your device.

View pH measurement trends

On your ICO application, you can find pH trends by clicking on the trend icon.

If action is required on your part, ICO will send you a recommendation.

Possible pH measurement anomalies

1. Your pH measurement peaks at around 8: we recommend that you measure the alkalinity of your pool or spa. A high TAC will cause the pH value to stabilise at a high level.
2. Your pH measurement fluctuates: we recommend that you measure the alkalinity of your pool or SPA. A low TAC results in an unstable pH reading.
3. Your pH measurement is blocked (low variation): we invite you to test the TAC of your pool water with your pool specialist. If no abnormal TAC is detected, please perform a pH variation test. Then contact our help desk.
4. You think your pH measurement is wrong : we invite you to carry out a mineral water test. You can find out how by clicking here then contact our helpdesk