Company for environmental gamma and/or tritium standards

[Scott Schwahn <schwahn@jlab.org>]

I would like to hear of any recommendations you might have for a company
in North America that can provide quarterly sources to meet the
following specifications for groundwater environmental QA:

1) 4-Liter environmental water cross- check.  Minimum of 4 gamma
emitting radionuclides, spanning range of typical HPGe detector. Range
of specific activities: 50-200 pCi/L. NIST traceable, certificate
required.

2) 1-Liter environmental tritium cross- check.  Range of specific
activity: 2000-15000 pCi/L.  NIST traceable, certificate required.

If you would, please respond via private e-mail (don't hit the "reply"
button) to my address below if you know of a company that may be able to
meet these requirements.

Thanks,
Scott

--
Scott O. Schwahn, CHP
Thomas Jefferson National Accelerator Facility
Newport News, VA
schwahn@jlab.org
<mailto:schwahn@jlab.org>


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