Thermo Fisher Scientific Eutech pH 5/6 Plus & Ion 6 Plus (New version R1.1, SN >797406) - Manual (Page 12)

Instruction Manual pH 5+, pH 6+, Ion 6+
3.2 Ion Calibration (Ion 6+ only)
Ion measurement requires an ion selective electrode (ISE)—sold separately. An ISE will
measure one specific ion of interest—such as ammonia or fluoride.
The available calibration values for the Ion 6+ are 0.1, 1.0, 10.0, 100.0, and 1000 ppm.
Choose any 2 or 3 consecutive values to use and prepare the corresponding ion
calibration solutions.
Refer to your ion selective electrode manual for important information regarding
electrode maintenance, sample preparation, use of calibration standards, and ionic
strength adjustment.
Always rinse electrodes with clean water before and after each calibration or sample
measurement to avoid cross-contamination.
The Ion 6+ will show “

” when ion calibration is required
.
Ion Calibration Procedure (Ion 6+ only)
1. Turn on the meter and select ion mode by pressing if necessary. For best
results, begin Ion calibration with your lowest calibration standard and finish
with your highest calibration standard value. Ex) 1.0, then 10, then 100.
2. Press to begin ion calibration mode. “
” (calibrate) will display briefly. The ion
calibration value “
.” will blink.
3. Dip the ISE into your standard solution. Add ISA if required. Swirl gently or stir.
Select the desired ion standard using to choose a higher standard or to
choose a lower standard. Press to confirm the desired standard.
4. The displayed mV reading corresponds to the selected ppm value. Notice that the
mV reading and “mV” annunciator will both blink.
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