Cleaning The Extraction Cone - Waters Xevo TQ MS Operator's, Overview And Maintenance Manual

4 Maintenance Procedures

Cleaning the extraction cone

Required materials
• Chemical-resistant, powder-free gloves.
• Appropriately sized glass vessel in which to completely immerse the
extraction cone 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 (for example, nitrogen) for drying (air-drying
optional).
• Wash bottle containing HPLC-grade (or better) 1:1 methanol/water.
• Large beaker.
Warning:
toxic materials, and to avoid spreading contamination to
uncontaminated surfaces, wear clean, chemical-resistant,
powder-free gloves when working with the extraction cone.
Warning:
hood, and suitable protective equipment. Formic acid is
extremely corrosive and toxic.
Caution:
place it on its tip; instead, place it on its flanged base.
To clean the extraction cone:
1. Immerse the extraction cone in the glass vessel containing 1:1
methanol/water.
If the extraction cone is obviously contaminated, use 45:45:10
Tip:
methanol/water/formic acid.
2. Place the vessel in the ultrasonic bath for 30 minutes.
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To avoid personal contamination with biohazards or
To avoid injury, work with extreme care. Use a fume
To avoid damaging the fragile extraction cone, do not