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Should a new pH probe be calibrated?

- Categories : Questions about RedOX probes
This is a very common question I get asked by people buying a new pool ph probe or existing customers who want to confirm a reading. Should a new pool ph sensor be calibrated immediately before being installed in the pool? The answer is yes. How do you know if you need to calibrate your probe?

How do you know if you need to calibrate your probe?

The owner of a pool has two choices: to calibrate his new ph probe or not to calibrate his new ph probe. While he may spend his time scouring the internet for answers, we'll try to keep it simple. A new ph probe should be calibrated as soon as possible. The key word here is as soon as possible. Since accessories such as test strips and gauges for checking pool water level are usually not as accurate as they should be, you are setting yourself up for disappointment if you don't calibrate. your new catheter as soon as you buy it.

What does it mean to calibrate a pH probe?

Calibrating a pH probe - practical advice A probe from an ORP controller, a probe from an electronic pH meter, or a pH probe from a pH regulator - what does calibration mean for each of these systems ? Before the practical part, let's start with a bit of theory... "Calibration" means making sure that the probe will measure a certain value as accurately as possible. A new probe must be calibrated before it is used for the first time.

What is the best way to calibrate a new pH probe?

Calibration is a simple procedure that you must follow if you want to get accurate results from your pH controller. Here is what you need:

The user manual for your pH regulator. In this manual you will find the methodology.
There are two types of pH regulator calibration.
1)Method: One point
In this case you will only need one calibration solution, usually pH 7.
The general method is very simple.
1) Stop the water circulation
2) Disassemble your probe
3) Rinse the probe with water
4) Dip the probe in the standard solution
6) Press the "C" or "Cal" button on your pH regulator (sometimes 3 seconds at least)
7) Wait 30 seconds to one minute.
8) Calibration is finished.
9) Rinse the probe with water.
10) you can reassemble the probe or check your calibration (see calibration check)
2) Method: 2 points
In this case you will need two calibration solutions: pH7-pH4, pH7-pH9, pH7-pH10 depending on your pH regulator.
1) Stop the water circulation
2) Disassemble your probe and rinse the probe with water.
3) Dip the probe in the first standard solution, generally pH 7.
4) Press the "C" or "Cal" button on your pH regulator (sometimes 3 seconds at least).
5) Wait 30 seconds to one minute.
6) Rinse the probe with water.
7) Dip the probe into the second standard solution.
8) Press the "C" or "Cal" button on your pH regulator (sometimes 3 seconds at least).
9) Wait 30 seconds to one minute.
10) Calibration is finished.
11) Rinse the probe with water.
12) you can reassemble the probe or check your calibration (see calibration check)

Calibration check.

Tips and tricks on how to check the calibration of your ph probe.
If your calibration is done correctly the pH regulator should display the value of your standard solution.
  1. Rinse the probe with water.
  2. Dip the probe into the standard solution.
  3. Read the measurement.
  4. The calibration is successful if the value read is within plus/minus 0.1 pH of the solution value. Example for a pH7 solution you should read between 6.9 and 7.1 pH.