Thermo Fisher Scientific CyberScan pH 1100/pH 2100 - Manual (Page 17)

Instruction Manual pH 1100/ 2100
17
3.2.3 Taking pH Measurements
NOTE: Be sure to remove the electrode soaker bottle or
protective rubber cap on the electrode before measurement.
1. Rinse the probe with deionized or distilled water before use
to remove any impurities adhering to the probe body. If the
pH electrode dehydrated, soak it for 30 minutes in electrode
storage solution or a 2M to 4M KCl solution.
2. Press ON. The upper display shows current pH reading and
temperature, and indicates automatic or manual
temperature compensation. The lower display shows month,
date, year and time. See Figure 35.
3. Dip the probe into the sample. Make sure the sensor or the
glass bulb of the electrode is completely immersed into the
sample. Stir the probe gently to create a homogenous
sample.
4. Allow time for the reading to stabilize. The pH indicator
blinks when reading is not stable. See Figure 36. When the
readings stabilizes, the pH indicator freezes and no longer
blinks.
7.179pH 25.3 C ATC
Jan 18 2002 08:46:25
°
Figure 35
Figure 36
7.546pH 25.4 C ATC
Jan 18 2002 08:46:30
°