Hach-Lange PHC108 - Manual (Page 10)

Table 3 Cleaning agent
Contaminant Cleaning agent Soak time
General contaminants Electrode cleaning solution 12–16 hours
Mineral deposits 0.1 N HCl solution 10–15 minutes
Fats, grease and oils Warm, mild detergent solution 2 hours (maximum)
Protein deposits Pepsin cleaning solution 3 hours (maximum)
Inorganic buildup EDTA solution 3 hours (maximum)
Storage
Short-term and long-term storage
For the best probe performance, do not let the reference junction become dry.
Note: Keep the probe in a sample for a maximum of 2 hours if the sample pH is not too high.
1. Rinse the probe with deionized water. Dry the probe with a no-lint cloth.
2. Fill the probe soaker bottle half full with the applicable Storage Solution (refer to
Specifications on page 1) .
3. Loosen the soaker bottle cap and put the soaker bottle on the probe.
4. Turn the soaker bottle cap clockwise to tighten the soaker bottle cap.
5. Make sure that the solution in the soaker bottle fully covers the glass bulb and the
reference junction.
Rehydration
If the glass bulb becomes dry:
1. Soak the probe tip in the 4.01 and 7.00 buffers each for 5 minutes.
2. Rinse the probe with deionized water. Blot dry with a no-lint cloth.
3. Calibrate the probe.
Troubleshooting
Message or symptom Possible cause Action
Probe not supported Software not updated To download the most current version of the software,
refer to the applicable product page on the
manufacturer's website.
Refer to the HQd Series meter documentation for more
information.
HQd meter does not sense the
IntelliCAL
® probe
Contact technical support.
Connect a probe or probe
requires service Probe not connected correctly Disconnect, then connect the probe. Tighten the locking
nut.
Software not updated To download the most current version of the software,
refer to the applicable product page on the
manufacturer's website.
Refer to the HQd Series meter documentation for more
information.
Large number of methods stored
on probe If the probe has a large number of stored methods, more
time is necessary for connection. Do not disconnect the
probe, continue to let the probe connect.
Damaged probe Make sure that there is connectivity with another probe or
meter to confirm isolated issue with probe. Contact
technical support.
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