Re: XRT Lead analyzer

["David O. Wallace" <dwallace@DFPM.UTAH.EDU>]

John,

>      Anyone have any information on the XRT lead analyzer sold by
>      Warrington INC [possibly known as Microlead 1)?  The device
>      contains a sealed source of Co-57 at approximately 10
>      millicuries.

I have a "dummy" Microlead 1 (no source) for training purposes.  

Here is their address:

	Warrington, Inc.
	2113 Wells Branch Pkwy., Ste. 6700
	Austin, Texas 78728
	512-251-7771

The Warrington Microlead 1 is an XRF device designed to measure lead 
in paint.  It measures the characteristic X-ray (k-shell) emitted 
when lead is excited by gamma radiation.  As a "direct reading" 
analyzer, it is less accurate than the "spectrum analyzers" now on 
the market.  

You can download the HUD "Performance Characteristic Sheet" (in PDF 
format) for it and other analyzers at 
http://www.hud.gov/lea/leadwnlo.html.

By the way, the lead-in-paint analyzer business is not going well.  
You can read more about it at 
http://www.iaqpubs.com/ldac-rsrc/stories/story3.html.

- Dave
************************************************************
David O. Wallace, MSPH, CIH
  Director, Lead and Asbestos Training
  Instructor, Industrial Hygiene
University of Utah
RMCOEH
75 South 2000 East
Salt Lake City, UT 84112-5120
Voice (801)581-7363 Fax (801)581-7224 Email dwallace@dfpm.utah.edu