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Unlocking Evidence. Energy Dispersive X-ray Fluorescence The Smart Detective for Forensic Applications. Challenges Facing the Forensic Scientist. Maintaining the integrity of Evidence Obtaining matching evidence with a high degree of certainty

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unlocking evidence

Unlocking Evidence

Energy Dispersive X-ray Fluorescence The Smart Detective for Forensic Applications

challenges facing the forensic scientist
Challenges Facing the Forensic Scientist
  • Maintaining the integrity of Evidence
  • Obtaining matching evidence with a high degree of certainty
  • Using techniques and applications which achieve the above objectives on a variety of sample sizes
how edxrf meets these challenges
Maintaining the integrity of Evidence

Obtaining matching evidence with a high degree of certainty

Using techniques and applications which achieve the above objectives on a variety of sample sizes

Non-destructive, non-contacting geometry

Using sort and best match criteria for fingerprint elements

Using flexible sample presentation systems

How EDXRF meets these challenges
important selection criteria for forensic applications
The ability to identify elements clearly

Good sort program for a certain amount of program automation

An indication of the confidence in the Match produced

Energy resolution is important

Must be able to build a library of reference spectra

Sort-Best Match routine should produce a confidence figure

Important selection criteria for forensic applications
the jordan valley ex 3600
Features

Analyzes for elements F-U

140±10 eV detector resolution @ 5.9 kV and 3000cps

Auto sampler – 10 position, optional 18 position and remove tray for large samples

Eight selectable primary beam filters and a collimator

Powerful ExWin Software

Benefits

High Versatility

Greater selectivity and superior element identification

Handles variable sample sizes with ease

Optimize excitation conditions for maximum sensitivity. Small samples can be analyzed using the collimator option.

Provides excellent tool for spectral manipulation, sort and best match routines, spectral libraries and other data routines

The Jordan Valley EX-3600
superior selectivity 140ev resolution
Superior Selectivity – 140eV resolution

Resolution @ Mn Kα 5.9keV on real life sample –

140eV ± 10eV

superior excitation flexibility
Superior Excitation Flexibility

The EX-3600 can be modified in the field to accept targets for very exacting analysis

In the above slide we are comparing Glass samples with varying Sodium Concentrations

Using an Aluminum Target. The EX-3600 can be modified to accommodate secondary targets.

versatile sample presentation
Versatile Sample Presentation

Sample holders hold different size samples from 24mm – 40mm diameter

Sample Changer can be removed for larger samples

Filter Wheelincludes a beam collimator that reduces the spot size to 1mm for small fragments

identifying unknown samples
Create a reference library of known materials

Create a Sort/ Best Match Routine

Run unknowns against Reference Library for Best Match

Identifying Unknown Samples
to summarize the jordan valley ex 3600 provides
To summarize…The Jordan Valley EX-3600 provides

Selectivity – best resolution available in its price range

Flexibility – scalable to a very powerful secondary target instrument

Versatility – Can handle a variety of sample sizes

Productivity – Sort and Best Match routines provide fast and reliable identification routines.

choose
Choose

The Winning Strategy

For Forensic Applications