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To clean the ion block components
Warning:
biohazardous and/or toxic materials. Always wear
chemical-resistant, powder-free gloves while performing this
procedure.
Use extreme care when working with formic acid. Use a
Warning:
fume hood and appropriate protective equipment.
The extraction cone is fragile. Never place it on its tip; always
Caution:
place it on its flanged base.
1.
Immerse the ion block, isolation valve, and extraction cone separately in
glass vessels containing 1:1 methanol/water.
To avoid damage, do not clean non-metal parts (for example,
Caution:
the heater cartridge assembly) in this way.
If the components are obviously contaminated, use 45:45:10
Tip:
methanol/water/formic acid.
2.
Place the vessels in the ultrasonic bath for 30 minutes.
3.
If you used formic acid in the cleaning solution, do as follows:
a.
Rinse the components by immersing them separately in glass
vessels containing water and then placing the vessels in the
ultrasonic bath for 20 minutes.
b.
Displace the water by immersing the components separately in
glass vessels containing methanol and then placing the vessels in
the ultrasonic bath for 10 minutes.
Caution:
chemical-resistant, powder-free gloves for the rest of this
procedure.
4.
Carefully remove the components from the vessels, and blow-dry them
using inert, oil-free gas.
The ion block components can be contaminated with
To avoid recontaminating the components, wear clean,
Cleaning the ion block, isolation valve, and extraction cone
5-39
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