Waters Xevo TQD Overview And Maintenance Manual page 124

4 Maintenance Procedures
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.
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.
Notice:
clean, chemical-resistant, powder-free gloves for the rest of this
procedure.
4. Carefully remove the extraction cone from the vessel, and blow-dry it
using inert, oil-free gas.
5. Inspect the extraction cone for persisting contamination. If
contamination is present, do as follows:
a. Use the wash bottle containing 1:1 methanol/water to rinse the
extraction cone over the large beaker.
b. Blow-dry the extraction cone with inert, oil-free gas.
6. Inspect the extraction cone for persisting contamination. If
contamination is present, dispose of the extraction cone, and obtain a
new one.
124 March 14, 2014, 715004387 Rev. B
To avoid recontaminating the extraction cone, wear
To avoid spreading contamination, dispose of the
Warning:
extraction cone in accordance with local environmental
regulations.