3.
Place the vessels in the ultrasonic bath for 30 minutes.
4.
If you used formic acid in the cleaning solution, do as follows:
a.
Rinse the components by immersing them in separate glass vessels containing
water and then placing the vessels in the ultrasonic bath for 20 minutes.
b.
Remove any residual water from the components by immersing them in separate
glass vessels containing methanol and then placing the vessels in the ultrasonic
bath for 10 minutes.
Notice:
To avoid recontaminating the components, wear clean, chemical-
resistant, powder-free gloves for the rest of this procedure.
5.
Carefully remove the components from the vessels, and blow dry them with inert, oil-free
gas.
6.
Inspect each component for persisting contamination. If contamination is present, do as
follows:
a.
Use the wash bottle containing 1:1 methanol/water to rinse the component over the
large beaker.
b.
Blow dry the component with inert, oil-free gas.
Warning:
To avoid spreading contamination, dispose of all waste materials
according to local environmental regulations.
7.
Inspect each component for persisting contamination.
Requirement:
If contamination is present, clean the component again. If contamination
is still present, dispose of the component, according to local environmental regulations,
and obtain a new one before reassembling the sampling cone assembly.
4.13.4 Assembling the sampling cone assembly
Required materials
Chemical-resistant, powder-free gloves
To assemble the sampling cone assembly:
Note:
To avoid recontaminating the components, wear clean, chemical-resistant, powder-free
gloves for the rest of this procedure.
Notice:
To avoid damaging the sampling cone, which is fragile, do not place it on its
tip; always place it on its flanged base
June 9, 2016, 715004990 Rev. A
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