6.
Assemble the flow cell. Refer to
on page 10.
7.
Identify if the electrode response has increased sufficiently.
• Yes—Stop. It is not necessary to polish the working electrode.
• No—Polish the working electrode. Refer to
on page 24.
Figure 11 Example of slow decrease in the electrode response
1
Day 1—A good response.
3
Day 3—Noise has increased. The detector
response is poor. It is necessary to polish the
working electrode.
2
Day 2—Decreased response but the cyanide
concentration is still measureable.
Polish the working electrode
N O T I C E
Only use the items specified in this procedure to polish the working electrode (MF-1008) or damage to the
working electrode can occur.
Polish the working electrode if the electrode response does not increase sufficiently after the working
electrode is cleaned. Refer to
on page 23.
Items to collect:
• 0.05-μm polishing alumina
• Alumina polish pad (brown with a soft, velvet texture)
• Glass plate from kit
• Squeeze bottle with methanol or ethanol
• Squeeze bottle with deionized water
• Lint-free cloth
1.
Set the CELL MODE knob to STBY.
2.
Set the POWER switch of the potentiostat to OFF.
3.
Disconnect the black wire from the working electrode jumper.
4.
Remove the working electrode from the flow cell. Refer to
on page 10.
5.
To use a new alumina polish pad:
a.
Clean the top-surface of one of the supplied glass plates with a lint-free cloth soaked with
methanol or ethanol.
b.
Peel off the backing from the alumina polish pad.
24
English
Summary of Contents for Lachat
Page 1: ...DOC272 97 80511 Lachat Amperometric Detector 04 2015 Edition 1 User Instructions ...
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