Replacing Electrodes
The ExStikTM is shipped with an electrode attached. Electrode life is limited and isdependent on (among other
factors) frequency of use and care. If the electrode needs to be replaced, follow these steps for removing and
connecting electrodes. Note that the PH110 has a refillable electrode and the PH100 does not.
1. To remove an electrode, unscrew and completely remove the electrode retaining collar.
2. Gently rock the electrode from side to side, pulling it away from the meter, until it disconnects.
3. To attach an electrode, carefully plug the electrode into the meter socket (note that the electrode connector is
keyed, ensuring proper connection).
4. Secure the electrode in place by tightly turning the collar in place (a rubber gasket seals the electrode with the
meter).
Automatic Electrode Recognition
When the ExStikTM is turned on, it recognizes the type of electrode that is connected and displays the appropriate
unit of measure. Attach electrode before turning the ExStikTM on.
Powering the ExStik™
If the batteries are weak, the ‘BAT’ indicator appears on the LCD. Press the ON/OFF key to turn the ExStikTM on or
off. The auto power off feature shuts the ExStikTM off automatically after 10 minutes of inactivity to preserve
battery life.
Operation
Overview
When the electrode is placed in a solution, the main display and bargraph indicate the pHreading while the lower
display reads temperature (readings flash until they have stabilized). The bargraph is ‘center zero’, i.e. at pH 7
there is no display. As the pH rises, the bar moves from the center to the right. If the pH drops, the bar moves
from the center to the left.
pH Calibration (1, 2, or 3 points)
A two point calibration with a buffer of 7 plus 4 or 10 (whichever is nearest to the expected sample value) is
always recommended. A one point calibration (choose the value closest to the expected sample value) is also
valid. For best accuracy, always calibrate at the sample temperature.
1. Place the electrode into a buffer solution (4, 7, or 10) and momentarily press the CAL key. pH 7 should be
calibrated first, then 4 and/or 10 pH.
2. The ExStikTM automatically recognizes the solution and calibrates itself to that value.
Note: If the solution is more than 1pH off from the 4, 7, or 10pH standard, the ExStikTM will assume an error and
abort the calibration. CAL and END will be displayed.
3. During calibration, the pH reading flashes on the main display.
4. When calibration is complete, the ExStikTM automatically displays ‘END’ and returns to normal operation mode.
5. The appropriate circled indicator ➃,➆, or ➉will appear on the LCD when a calibration has been completed.
The calibration data is stored until a new calibration is performed.
6. For a two or three point calibration, repeat steps 1-4.
Note: Always turn the meter off and then on before calibrating to allow sufficient time to complete the calibrations
during one power cycle. If the meter auto powers off during calibration the calibrations remain valid, but new
calibrations will turn the circled indicators off.
Changing the Displayed Temperature Units
Press and hold the CAL button for approx. 3 seconds. The °C or °F icon will change first and the numerical
temperature value will change after the button is released. If the
Calibration mode is accidentally accessed ‘CAL’ appears on the LCD. Simply turn the ExStikTM off and start again.
Brouwland
Korspelsesteenweg 86 • B-3581 Beverlo - Belgium
Tel. +32-(0)11-40.14.08 • Fax. +32-(0)11-34.73.59
Manual
013.130.0 pH meter pH110
