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5. Moisten the plastic side of the fine polishing pad slightly with water and place
it on a smooth, flat surface.
6. Sprinkle about one-half gram of polishing compound in the center of the
suede side of the polishing pad. Add enough deionized water to make a thick
paste.
•
If you are polishing the electrode because of degradation of
performance, such as a noisy baseline or tailing peaks, first use the
coarse polishing compound.
•
If you are polishing the electrode before initial installation, use the
fine polishing compound.
7. Using the working electrode block, spread the paste evenly over the pad.
Then, applying firm pressure in a figure eight motion, polish the surface of the
electrode block for about one minute. If the pad dries out while polishing, add
water sparingly. However, never allow the polishing compound to dry on the
cell body.
8. Use deionized water to rinse off all traces of polishing compound from the
electrode block. An ultrasonic cleaner is effective for thoroughly cleaning the
Doc. 065551-01 6/13
pad is shipped with each type of working electrode.
Using indelible ink, label each pad to indicate the
working electrode with which it is used.
Assembled Cell
Cell Body
Working Electrode
Wing Screws
Figure 5-1. Amperometry Cell Components
5 • Service
Cell Cover
Alignment Studs
Cell Gasket
5-3
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