Having learned XRF from George, I also like the Fischer systems.  

I find XRF spectrum (wt%) measurements are repeatable to about 0.1% under the best conditions, such as on a 'certified' reference material like 304 SS or C36000 brass.  
I would be skeptical of a claim of accuracy to 0.001%.  




-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of George Wenger
Sent: Tuesday, June 27, 2017 2:35 PM
To: [log in to unmask]
Subject: Re: [TN] XrF systems

Richard,

I've used several Fischer XRF units over the past 30 years and was extremely happy with their performance and with the service provided by Fischer.

George Wenger

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Stadem, Richard D.
Sent: Tuesday, June 27, 2017 2:49 PM
To: [log in to unmask]
Subject: [TN] XrF systems

I am considering requesting capital for an additional or replacement XrF system, but would like to go in armed with a short list of particular models and costs and be confident of their performance records and capabilities.
The least important factor is cost, so don't hold back from sending me a confidential email on your choice.
The machine should be able to accurately determine the percentage of gold, silver, tin, nickel, lead, copper, etc., down to the .001% level in order to confirm that the plating on incoming component leads meets the component print or requirements.
It should also be able to accurately determine the metallurgic make-up of any given metal sample. Is that asking a lot? I don't know.
I prefer a hand-held, but if what I am looking for is only available in a base machine package, then that will have to work.
No information you folks provide will be shared. Feel free to send me an email at either [log in to unmask]<mailto:[log in to unmask]> or [log in to unmask]<mailto:[log in to unmask]>.
I sincerely appreciate any information you can share with me.

Thanks
R. Dean Stadem