Warning:
To avoid spreading contamination, dispose of all waste materials according to
local environmental regulations.
6.
If the O-ring shows signs of deterioration or damage, dispose of it in accordance with local
environmental regulations.
7.
Unscrew and remove the PEEK cone gas nozzle handle from the cone gas nozzle.
4.13.3 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
• Oil free, argon gas or Oil free, nitrogen gas
• Wash bottle containing HPLC-grade (or better) 1:1 methanol/water
• Large beaker
To clean the sample cone and cone gas nozzle:
Warning:
To avoid personal contamination with biohazards, toxic materials, and corrosive
materials, wear chemical-resistant gloves when performing this procedure.
Warning:
To avoid injury when working with formic acid, which is extremely corrosive and toxic,
take extreme care handling it, and use a fume hood and suitable protective equipment.
Notice:
To avoid damaging the sampling cone, which is fragile, do not place it on its
tip; always place it on its flanged base
1.
If the sample cone contains debris, place a drop of formic acid on its orifice.
2.
Immerse the sample cone, cone gas nozzle, and cone gas nozzle handle in separate glass
vessels containing 1:1 methanol/water.
Tip:
If the components are obviously contaminated, use 45:45:10 methanol/water/formic
acid.
June 9, 2016, 715004990 Rev. A
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