pHix® Compact V3. NG (next generation)
EN 4.10 Version 2202
Buffer adjustment /Buffer solutions
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and zero point.
Existing buffer adjustments are deleted once new buffer adjustments is completed.
It is needed that pHix, the electrode and the buffer solutions are at the same
temperature during adjustment to get a correct slope and zero point.
The electrode
acceptance limits
min
max
Slope [mV/pH] @ 25°C
-62.12 mV
-50.0 mV
Offset [mV]
-30 mV
30 mV
The LED pattern during buffer
adjustments is:
1 flash every 5 seconds.
Measuring mode
3 flashes every 5 seconds.
Trying to find buffer
2 flashes every 5 seconds.
Buffer found
1 flash every second.
Buffer not found
3 flashes every second.
Error mode
Timeouts
Two minutes to find buffer.
Ten minutes to complete the buffer adjustment.
If the the switch ring is used, the buffer found must be the same as the one selected with
the ring, else an error is triggered.
If the switch ring is not used the pHix automatically detects the buffer.
The default reference buffer values are 4.01, 7.0 and 10.01 pH, corresponding to the
buffer solutions provided by MJK. This values can be changed via
Buffer solutions
Buffer solution are delivered as ready-to-use solutions with the pH values 4.01, 7.00 and
10.01.
During the buffer adjustment, pHix® Compact is calibrated in accordance with the pH
values of the buffer solutions. It is therefore important to use as accurate buffer solutions
as possible, i.e. to ensure that a pH 7 buffer solution in fact has a pH value of exactly 7.
