WorksheetsIC Webinar
Total questions: 15
Worksheet time: 15mins
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Which grade of water can be used for preparing eluent for ion chromatography?
Tap water
Deionised water
Ultra pure water
Mineral water
> 18.2 MOhm Resistivity
Why must the water used for eluent preparation be degassed?
Gas bubbles can damage IC system
Gas bubbles can affect retention time
Dissolved CO2 can affect chemical equilibrium of carbonate eluent
Dissolved gases can shorten column life
What is the appropriate membrane pore size that should be used for filtering eluent and samples?
0.2 µm
0.45 µm
20 µm
1.0 µm
How often should the peristaltic pump tubing be exchanged?
Monthly
Every two months
Every four months
Every six months
When should the guard column be exchanged?
Monthly
300-500 injections
When backpressure is very high
Every 12 months
What is/are the proper steps to be performed, if the ion chromatograph is not use for a longer period of time (>1 week)?
a. Columns and guard be removed and suitable storage
b. Entire flow path be rinsed with 20% Methanol water for at least 10 min
c. Flush all 3 channels of the suppressor MSM with 20% Methanol
d. Release the contact pressure of the peristaltic pump
a>d>b>c
d>b>c>a
b>c>d>a
a>b>c>d
Name the component in circle 1: -
(a)
Name the component in circle 2 : -
(a)
Name the component in circle 3:-
(a)
Does the webinar lesson help to improve knowledge on handling and troubleshoot on your IC system?
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