Cleaning the extraction cone
4-41
•
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
1. Immerse the extraction cone in the glass vessel containing 1:1
methanol/water.
Tip:
If the extraction cone is obviously contaminated, use 45:45:10
methanol/water/formic acid.
2. Place the vessel in the ultrasonic bath for 30 minutes.
3. If you used formic acid in the cleaning solution, do as follows:
a. 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.
b. Dry the components by immersing them in separate glass vessels
containing methanol and then placing the vessels in the ultrasonic
bath for 10 minutes.
Warning:
The extraction cone can be contaminated with
biohazardous and/or toxic materials. Always wear
chemical-resistant, powder-free gloves while performing this
procedure.
Warning:
Formic acid is extremely corrosive and toxic. Work with
extreme care, use a fume hood and suitable protective
equipment.
Caution:
The extraction cone is fragile. Never place it on its tip; always
place it on its flanged base.
Summary of Contents for Xevo TQD
Page 12: ...xii...
Page 20: ...xx Table of Contents...
Page 23: ...Uses and compatibility 1 3 Xevo TQD TP03406...
Page 24: ...1 4 Specifications and Operating Modes Xevo TQD with visor up TP03407...
Page 42: ...1 22 Specifications and Operating Modes...
Page 52: ...2 10 Preparing for Operation...
Page 76: ...3 24 Changing the Mode of Operation...
Page 194: ...4 118 Maintenance Procedures...
Page 208: ...A 14 Safety Advisories...
Page 234: ...B 26 External Connections...
Page 238: ...C 4 Materials of Construction and Compliant Solvents...
Page 250: ...Index 8...