June 28, 2016, 715003956 Rev. C
Page 35
5. Remove the ion block from the source housing.
3.7.4 Cleaning the source components
Required materials:
• Chemical-resistant, powder-free gloves.
• Appropriately sized glass vessels in which to completely immerse components when
cleaning. Use only glassware not previously cleaned with surfactants.
• HPLC-grade (or better) methanol.
• HPLC-grade (or better) water.
•Formic acid.
• Ultrasonic bath.
• Source of oil-free, inert gas (nitrogen or argon) for drying (air-drying optional).
• Wash bottle containing HPLC-grade (or better) 1:1 methanol/water.
• Large beaker.
To maintain the source components:
1. Remove any O-rings from the source components, and replace the PEEK calibration pin at
the top of the ion block.
Important: If the O-ring is visibly damaged, replace it.
Warning: To avoid personal contamination with biohazards or toxic materials, always wear
chemical-resistant, powder-free gloves while performing this procedure.
Warning: To avoid contamination with corrosive and toxic formic acid, use a fume hood and
suitable protective equipment during this procedure.
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