Waters SYNAPT G2 Operator's, Overview And Maintenance Manual page 113

• 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.
To clean the extraction cone
Warning:
biohazardous and/or toxic materials. Always wear
chemical-resistant, powder-free gloves while performing this
procedure.
Warning:
extreme care, use a fume hood and suitable protective equipment.
The extraction cone is fragile. Never place it on its tip; always
Caution:
place it on its flanged base.
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.
Requirement:
follows:
• Rinse the extraction cone by immersing it in a glass vessel
containing water and then placing the vessel in the ultrasonic bath
for 20 minutes.
• Remove any residual water from the extraction cone by immersing
it in a glass vessel containing methanol and then placing the vessel
in the ultrasonic bath for 10 minutes.
The extraction cone can be contaminated with
Formic acid is extremely corrosive and toxic. Work with
If you used formic acid in the cleaning solution, do as
Cleaning the extraction cone 5-35