Usually nitrogen is bubbled through chemicals to remove oxygen and/or
CO2.  This will help them last longer and behave more consistently.

-Mike
 U. of Louisville

>>> "abdelyamine"  1/3/2007 7:40 AM >>>
Hello

I've found on flow diagram of my equipment (Spray Acid Tool), that the
tanks
of chemicals (H2SO4, HF.) are purged with N2. Could anyone tell me
why,
please!!