Thermo Fisher Scientific CyberScan pH/Ion 510 - Manual (Page 11)

Instruction Manual pH 510/ Ion 510
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One point calibration (Offset calibration) should only be carried out with pH 7.00 or pH 6.86; otherwise
calibration will not be accepted. For Slope to Slope calibration (two points calibration), the first calibration point
will only be successfully registered in the meter after the second point calibration has been completed.
It is recommended that you perform at least a 2-point calibration using buffers that bracket (one above and one
below) the expected sample range, starting with pH 7 buffer first. Select a pH 1.68, 4, 7, 10 or 12.45 buffer in
sachets or bottles from standard buffer solutions.
All new calibrations will replace the existing stored calibration data.
1. Press ON/OFF key. All the LCD segments will be displayed
momentarily. The LCD switches to pH measurement mode. If
necessary press MODE key to select pH mode.
NOTE: The meter starts in the same measurement mode that it
was switched off.
2. The customized LCD display will indicate the following:
Display Remarks
MEAS Measurement mode is selected
pH Unit of measurement
o C Measured temperature reading
ATC Automatic Temperature Compensation
(If temperature probe or “All-in-One” probe is
connected)”
3. Rinse the pH electrode well with deionized water or rinse solution.
If using the ATC function with a separate temperature probe,
thoroughly rinse the temperature probe as well. (Do not wipe the
electrode or the temperature probe as this may cause a build-
up of electrostatic charge and will create calibration and
measurement instability!).
One Point Calibration
4. Select the first pH buffer, pH 7.00 (or pH 6.86) and pour some into
a clean container.
5. Dip both probes into the standard calibration buffer. The end of
the probe must be completely immersed into the buffer. Stir the
probes gently to create a homogenous solution.
6. Press CAL/MEAS key to enter the pH calibration mode. The
annunciator [CAL] appears on top of the LCD to indicate the
meter is in pH calibration mode. The upper display will show the
measured reading while the lower display indicates appropriate
pH standard buffer solution being used.
NOTE: The meter automatically recognizes the buffers in the
buffer standard you have set in the SETUP mode, i.e. either USA
(pH1.68, 4.01, 7.00, 10.01 or 12.45) or NIST (pH1.68, 4.01, 6.86
9.18 or 12.45) buffers.
Figure 1: 1st-point calibration