Hardware manual

Maintenance 4
Agilent 7500 Series ICP-MS Hardware Manual 4-39
Cleaning the Concentric Nebulizer, MicroMist Nebulizer and the End Cap
The carrier gas pressure is generally 200 to 300 kPa at a 1.0 L/min carrier gas
flow rate. The argon gas supply pressure has to be set to 700 kPa. If the carrier
gas pressure rises to more than 300 kPa, the nebulizer may become clogged.
Figure 52 Concentric Nebulizer and End Cap
NOTE
Maintenance for the MicroMist Nebulizer is same as the Concentric Nebulizer.
CAUTION
• Do not use chemicals such as Hydrofluoric Acid (HF) that erodes quartz with the
concentric nebulizer.
• A wire must not be used to clear a clogged concentric nebulizer or it will be
damaged.
• Ultrasonic wash must not be used to clean the delicate spray part of the concentric
nebulizer.
Tubing for Make-up Gas
End Cap
O-ring
Tubing for Carrier Gas
Back ferrule
Front ferrule
O-ring
Nebulizer
O-ring
O-ring
Teflon Tubing
for Sample