Hardware manual

Maintenance 4
Agilent 7500 Series ICP-MS Hardware Manual 4-55
Cleaning the Torch
To clean the torch, complete the following steps:
1 Soak the torch in a 5% Nitric Acid bath overnight.
Remove air bubbles trapped under the torch by slightly tipping the torch
from side to side. Protective gloves and safety precautions should be
observed at all time when working with Nitric acid.
2 Rinse the torch with pure water.
Rinse the torch with pure water at least 3 times and lay on a clean surface
to dry.
3 Dry the Torch.
Use a flow of clean Argon or Nitrogen to blow any remaining water from the
torch before installing the torch into the instrument.
NOTE
• Do not use HF to clean the torch as it will damage the torch.
• Do not place the torch in an ultrasonic bath.
CAUTION
If the torch is still wet when it's installed, it will break or may cause difficulty igniting
the plasma.