9
The procedure below illustrates the general process
for taking pH readings. When taking measurements
in liquids, ensure that the tip is fully immersed and
not touching the side of the container. Stir and let the
reading stabilize. Information on measuring other
media are given in subsequent sections.
1. If necessary, power on the tester.
2. The timer icon will blink during this time. Once the
reading is stabilized, the timer stops blinking and will
appear to indicate the stability of the reading.
3. Note the value or press HOLD
to freeze the read-
ing. To release the reading, press HOLD
again.
4. Press and hold the power button for 5 seconds to
turn off tester. If key is not pressed for 8.5 minutes,
the tester will automatically shut off to conserve bat-
teries.
Taking Measurements
