Thermo Scientific iCAP 6000 Series Maintenance Manual page 31

iCAP Customer Training Manual
glass or Teflon chamber the chamber
should be wetted properly; that is
there should be no water droplets
building up on the walls of the spray
chamber.
This is usually caused by an oily film
and can be easily cured by aspirating
a 0.1% HF acid solution for about 20
seconds.
HF however, will cause a problem
with Si analysis for a short time
afterwards. If Si is being analysed try
using a Triton X-100 solution. This
solution is also good for the
polypropylene spray chamber
Other causes of poor precision can be
in the expendable parts such as
nebuliser and torch/centre tube.
Spares should always be available
and these should be substituted one
by one to observe the result. If the
nebuliser is the culprit, check the
inside of the orifice, by removing the
gas fitting, then with a magnifying
glass look for any small obstruction
Also check the capillary for
obstructions.
.
WARNING: Under no
circumstances use HF unless
you have been trained on its use
and have taken appropriate
safety precautions
.