Buffer Adjustment Using The Switch Ring - Xylem mjk pHix Compact Manual

Use only fresh buffer solutions! Dispose of any used buffer liquid.
Observe that transmitter, electrode and buffer solution has the same
temperature - preferably app. 77° F / 25° C.

Buffer adjustment using the switch ring

Remember to clean the electrode as described in the previous section!
When the switch ring has been on for at least 10 minutes, it will only be
possible to buffer adjust pHix® Compact with the switch ring. The switch ring
has four positions, and must only be set to one of these positions in order to
obtain correct function:
Positio Function
n
M Measurement.
The switch ring should always be in this position during normal
service (measuring). This is indicated by the LED flashing app.
every 5 seconds.
4 Buffer adjustment in buffer with pH value 4.
7 Buffer adjustment in buffer with pH value 7.
10 Buffer adjustment in buffer with pH value 10.
If the switch ring is set to one of the positions 4, 7 or 10, the LED will give out
three short flashes every 5 seconds.
If pHix® Compact is being put into a buffer liquid with the same value as the
switch ring is set to, pHix® Compact will automatically begin to scan for a buffer
Buffer adjustment / Buffer adjustment using the switch ring
pHix® Compact
EN 4.10 Version 2007
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