Hach-Lange PHC101-30 Instruction Sheet - Manual (Page 2)

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Each electrode is supplied with color-code clips for easy identification. There are two each
of five colors (black, yellow, light green, light blue, and magenta), one for the electrode
and one for the cable connector.
Optional probe-cable depth markers are available (Cat. No. 58286-10).
Assembly
Important Note: Do not remove the cable from the electrode. Doing so can damage the
probe.
1. Unscrew the locking ring and remove the protecting shroud ( Figure 1 , Item 1 ).
2. Remove the electrode storage cap from the electrode ( Figure 1 , item 2 ).
3. Remove the protective film from the reference junctions ( Figure 1 , item 3 ).
4. Rinse the electrode with deionized water and blot dry with a paper towel. Do not
scrub the bulb.
5. Install the shroud and locking ring and finger-tighten.
6. Attach a pair of color-code clips to the electrode and cable connector
( Figure 1 , item 5 ).
7. When ready to use, attach the electrode storage cap to the electrode storage cap lid
( Figure 1 , item 5) to prevent storage solution spillage and/or loss of the cap when not
in use.
Calibration
For calibration steps, refer to the HQ Portable Meters User Manual. The IntelliCAL™
probes store the current calibration and calibration history in the probe memory. It is not
necessary to recalibrate when moving a calibrated electrode from one meter to another.
Maintenance
Important Note: Do not scrub the bulb. If the bulb becomes fouled, immerse and agitate
in a warm dilute mild detergent solution for a few minutes, rinse well with deionized water,
and gently blot or air dry prior to re-use.
Important Note: Never use this electrode in organic solvents; or if the pH to be measured
is lower than 2.
General Maintenance
• Before measuring a new sample, rinse the electrode with deionized water and blot dry
with a paper towel.
• If calibration errors occur, re-calibrate using fresh, high-quality buffers.
• If the pH glass membrane is not properly hydrated, soak the electrode in pH 4 buffer
for up to two hours.
Storage
• Between uses, in intervals of up to two hours, store the electrode in the sample (if the
sample pH is not extreme), or in a neutral solution such as tap water.
For longer term storage, place the electrode in a 3M potassium chloride (KCl)
solution, either in the provided storage cap or in a beaker.