Campbell CS526 Instruction Manual - page 16
CS526 ISFET pH Probe
11.1.2 Cleaning Procedure
1.1.2 Cleaning Procedure
Read Section 11.1.2.1, Cleaning Tips, before following this procedure.
Read Section 11.1.2.1, Cleaning Tips, before following this procedure.
1. Place probe in warm tap water (~60°) with a mild detergent and soak for 5
minutes, stir periodically.
1. Place probe in warm tap water (~60°) with a mild detergent and soak for 5
minutes, stir periodically.
2. Scrub the surface of the chip and the diaphragm (FIGURE 11-1) with a
soft toothbrush and water with a mild detergent (see Caution).
2. Scrub the surface of the chip and the diaphragm (FIGURE 11-1) with a
soft toothbrush and water with a mild detergent (see Caution).
Never brush the probe tip, especially the ISFET chip,
Never brush the probe tip, especially the ISFET chip,
CAUTION
before rinsing and flushing thoroughly with water. Before
rinsing debris and particles may be on the sensor surface
and brushing them into the sensor may damage it. When
in doubt, soak the probe for a while in warm water with a
mild detergent.
Diaphragm
Chip
FIGURE 11-1. Tip of the CS526 probe
3. Rinse thoroughly with deionized water.
4. Revitalize the probe (Section 11.1.3, Revitalizing)
5. Calibrate the probe (Appendix A, Calibration).
11.1.2.1 Cleaning Tips
• To avoid scratches on the sensor surface, rinse the probe thoroughly using
water before cleaning the probe with the soft brush supplied with the meter
and tap water with a mild detergent added. Most scratches on the sensor
are caused when there are hard particles in the sample and the sample is
rubbed into the sensor when cleaning with the toothbrush.
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