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Re: Florida Lab-Interview with Jeff Atwater
Posted by: John J. Lentini, CFEI (IP Logged)
Date: September 24, 2016 09:05AM

[www.abcactionnews.com]


Mr. Atwater almost gets what’s going on. He attributes the lab’s problems to a lack of documentation. That was part of the problem, and was the reason that for 5 years, the ASCLD-LAB assessors failed to see the erroneous methods. They were never written down.

The other part of the problem, and the real heart of the matter, is the lab’s use of invalid methodology to identify gasoline. Here is the most damning quote from the ASCLD-LAB assessment team’s report:

The laboratory’s approach of using distorted extracted ion profile ratios coupled with an abbreviated selection of target compounds for identification of gasoline in case data dominated by the sample matrix, as described by analysts in interviews and alluded to in the data provided in the case files reviewed, is not accepted in the scientific community.

And later,

…the issue is that the interpretation methodology being employed by the laboratory is an undocumented, unvalidated protocol that is not generally accepted in the scientific community.

The lab chief’s response to the report was that the assessment team was simply being “too conservative.”

The Appeal Board found this argument unpersuasive.

John Lentini, CFI, D-ABC
Fire Investigation Consultant
Florida Keys
[www.firescientist.com]



Subject Views Written By Posted
  Florida Lab 1914 Mark Goodson 08/16/2016 11:34AM
  Re: Florida Lab 1217 Fire 08/17/2016 01:46PM
  Re: Florida Lab 1262 John J. Lentini, CFEI 08/17/2016 03:33PM
  Re: Florida Lab 1125 iacoss 08/18/2016 12:56AM
  Re: Florida Lab 1101 John J. Lentini, CFEI 08/18/2016 02:25PM
  Re: Florida Lab 894 iacoss 09/26/2016 08:05PM
  Re: Florida Lab 881 John J. Lentini, CFEI 09/26/2016 10:41PM
  Re: Florida Lab-More news coverage 1045 John J. Lentini, CFEI 09/08/2016 08:21AM
  Re: Florida Lab-Appeal of Suspension denied by ANAB 991 John J. Lentini, CFEI 09/21/2016 01:19PM
  Re: Florida Lab-Interview with Jeff Atwater 1020 John J. Lentini, CFEI 09/24/2016 09:05AM
  Re: Florida Lab-Interview with Jeff Atwater 968 Sir Gary 09/25/2016 11:28AM


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