Determining Sample Uptake Rate
To determine the sample uptake rate for a nebulizer you will need a 10 mL
graduated cylinder, stopwatch (or any watch or clock able to read 60 seconds)
and de-ionized water.
Verify that the air regulator has been set to 30 psi. Start the flame per the normal
procedure and allow the flame to stabilize. Fill the graduated cylinder to the 10
mL mark.
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Put the nebulizer uptake tube into the graduated cylinder.
You should immediate start timing the sample up-take using the stop watch.
After 60 seconds, remove the sample up-take capillary from the graduated
cylinder.
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The up-take rate is the difference between 10 mL and what remains in the
graduated cylinder.
A good nebulizer should have an uptake rate of greater than 4.5 mL/min. If the
uptake rate is not at an acceptable rate then you will need to remove the
nebulizer and clean it or replace it. The part number for a replacement nebulizer
is P/N 942339005481.
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