This content provides a step-by-step guide on how to properly calibrate and use a stationary pH meter to accurately measure the pH of solutions.
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In this video, you will learn how to use
a pH meter. PH meters can be small and
handheld or larger stationary pH meters.
In this video, we will be using a
stationary pH meter.
The parts of a pH meter include the meter,
meter,
the arm,
The arm allows the electrode to be
easily moved up and down into a beaker
Prior to use, a pH meter should be
calibrated using color-coded buffers of
fixed pH. PH4,
7,
and 10 are standard.
The first step in using a pH meter is to
remove the protective cap from the electrode.
electrode.
The electrodes of the pH meter need to
be stored properly, capped, and immersed
in a storage solution to prevent them
Next, the electrode must be rinsed using
Various pH meters will have different
procedures for calibration. To calibrate
your pH meter, you will need to review
the owner's manual for the proper procedure.
Begin the process of calibration using
Once the standard has been calibrated,
you will need to remove the sample and
rinse the electrode with distilled Water.
Repeat the process again.
This time using the standard with a pH
Once the standard has been calibrated,
you will need to remove the sample
and again rinse the electrode with
You will then calibrate the final
When the pH10 standard has been calibrated,
calibrated,
rinse off the electrode with distilled
water. PH meters must be calibrated each
time to ensure the accuracy of
measurements. Using the three different
pH standards for calibration provides
for a wide range of accuracy.
You are now ready to measure the pH of
Place the unknown solution beneath the
electrode and slowly lower the arm so
that the electrode is fully submerged in
This sample has a pH of 5.57
Once the reading is complete, remove
Once again, rinse the electrode with
If this is your final sample, replace
the protective electrode cap for storage.
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