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7
General Maintenance
To Clean the EI HES
7000/7010 Series TQ GC/MS Operating Manual
171
To Clean the EI HES
Materials needed
•
Abrasive paper (5061-5896)
•
Alumina abrasive powder, 100 g (393706201)
•
Aluminum foil, clean
•
Cloths, clean (05980-60051)
•
Cotton swabs (5080-5400)
•
Glass beakers, 500 mL
•
Gloves, clean, lint-free (Large 8650-0030) (Small 8650-0029)
•
Solvents
•
Methanol (reagent-grade)
•
Methylene chloride (reagent-grade)
•
Acetone (reagent-grade)
•
Ultrasonic bath
Procedure
1
Disassemble the ion source. (See
“To Disassemble the EI XTR Source”
2
Collect the following parts to be cleaned if you are cleaning an EI HES: (See
•
Repeller
•
Source body
•
Extractor lens (5)
•
Post extractor lens 1 (4)
•
Post extractor lens 2 (3)
•
Ion focus lens (2)
•
Extended entrance lens (1)
These are the parts that contact the sample or ion beam. The other parts
normally should not require cleaning.