Thermo Scientific Orion 310, Instruction Manual

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PerpHecT ® Orion 310, 320, 330 Instruction Manual
B. Autocalibration with One-buffer
NOTE : Autocalibration with one-buffer can only be
performed using pH buffer 7.00.
1. Attach the pH electrode to the meter.
2. Choose pH 7.00 Buffer.
3. Press CAL key to initiate calibration sequence. CAL is displayed
for 2 seconds. Select calibration range “7” using the SCROLL
(
▲
,
▼
) keys. Press the YES key to accept. Place electrode in pH
7.00 buffer. Reading will be displayed and updated as calibration
continues. When the READY light comes on, indicating electrode
stability, press the YES key to accept.
4. SLP will be displayed in the upper field while 100.0 (or previous
calibration slope value) is displayed. This value can be edited
using the SCROLL (
▲
,
▼
) keys. Press the YES key to enter
this value.
5. Meter will automatically go into the MEASURE mode. The
READY light will come on to indicate electrode stability.
6. If operating in the LogR mode or using an ATC probe, the
temperature-corrected pH reading is displayed.
7. Rinse electrodes with deionized water and place into sample.
Record pH directly from the main meter display when the READY
light is displayed or when electrode signal is stable.
General Information on pH Calibration for Orion 320