Hello,

I would like to know where to purchase:

1. Helium, 4.6 (99.996%) with 2% H2

and 

2. H2 6.0 (99.9999%) -200 per mil vs. SMOW.

We are located in Maryland, USA.

The service engineer installing our system (Delta V) tells me the Helium 
tank(with 2% H2) is needed for oxygen measurement and the H2 for hydrogen. 
I'm new to this and I don't quite undertand the need for the 2% H2 in 
Helium.

Thanks for anyone that can help me out.

Vanessa R. Kinton
Alcohol and Tobacco Tax Trade Bureau
240-264-1591