Cleaning The Sample Cone And Cone Gas Nozzle - Waters Xevo TQD Overview And Maintenance Manual

4 Maintenance Procedures

Cleaning the sample cone and cone gas nozzle

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.
Warning:
toxic materials, and to avoid spreading contamination to
uncontaminated surfaces, wear clean, chemical-resistant,
powder-free gloves when working with the sample cone and cone
gas nozzle.
Warning:
hood, and suitable protective equipment. Formic acid is
extremely corrosive and toxic.
Notice:
it on its tip; instead, place it on its flanged base.
To clean the sample cone and cone gas nozzle:
1. If the sample cone contains debris, place a drop of formic acid on its
aperture.
2. Immerse the sample cone, cone gas nozzle, and cone gas nozzle handle in
separate glass vessels containing 1:1 methanol/water.
If the components are obviously contaminated, use 45:45:10
Tip:
methanol/water/formic acid.
114 March 14, 2014, 715004387 Rev. B
To avoid personal contamination with biohazards or
To avoid injury, work with extreme care. Use a fume
To avoid damaging the fragile sample cone, do not place