[ RadSafe ] Instruments

John G. Hunt john at ird.gov.br
Mon Jul 14 02:07:21 CDT 2008

Hi Paul,

As it happens, we have been  evaluating portable scintillation-based-surface-
contamination equipment, and the CoMo 170 was one of the equipment evaluated.


It's light, the price reasonable, has a good response for alphas and betas - 
one of the best in Bq/cm^2 per cps, especially for the alphas.

On the down side, it seems that CoMo 170 has sacrificed sturdiness for 
weight, and the shield for electro-magnetic fields and entrance of light is 
not very strong. If the equipment has to be opened, this shield can be 

We use this equipment, but we will also buy equipment from another supplier.

Hope this is helpful,

John Hunt.

---------- Original Message -----------
From: hpsolutions at comcast.net
To: "J. Marshall Reber" <jmarshall.reber at comcast.net>
Cc: Radsafe <radsafe at radlab.nl>
Sent: Fri, 11 Jul 2008 20:42:25 +0000
Subject: Re: [ RadSafe ] Instruments

> No,
> I am saying that we have been asked to look at these instruments for 
> purchase.  I have the technical manuals.  Unfortunately, technical 
> manuals only tell you what the manufacturer wants you to know.  They 
> don't tell you that the instruments break down every two weeks, or 
> that they can't be calibrated by anyone but the manufacturer.  I 
> believe that one of the original tenets of RADSAFE was for HPs to 
> share ideas and information.  I am merely asking if anyone has any 
> experience with these instruments, and if they are willing to share 
> that information.  The type of information that I am trying to get 
> is not found in technical manuals, but in the minds of our friends 
> and colleagues who we rely on to help us with everyday issues that 
> may not be everyday issues to us.
> If anyone has any information to share about these instruments, I 
> would appreciate your input.
> --
> Paul Jones, CHP
>  -------------- Original message ----------------------
> From: "J. Marshall Reber" <jmarshall.reber at comcast.net>
> > 
> > On Jul 10, 2008, at 7:32 PM, hpsolutions at comcast.net wrote:
> > 
> > > I have been asked to look at instruments from S.E.A GmbH
> > 
> > Are you saying that you have been asked to evaluate instruments for  
> > which the manufacturer is unable to provide sufficient technical  
> > information for a technical evaluation?
> >
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------- End of Original Message -------

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