AZtecGSR

Gunshot Residue (GSR) is a key piece of forensic evidence that is often critical to ensuring justice in some of the most serious crimes. AZtecGSR provides fast, accurate, and easy to use SEM-based GSR analysis for the forensic analyst.

AZtecGSR provides analysts with:

Particle analysis optimised for GSR
Accurate element identification with AZtec’s TruQ® algorithms
Automatic data collection and particle classification according to ASTM-E1588 16, 17 & 20
Manual and automated particle reacquisition workflows

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检测和AZtecGSR是一个专用的工具analysis of gunshot residue (GSR) particles in the SEM. AZtecGSR is a tailored version of the AZtecFeature particle analysis platform, sitting within the AZtecLive NanoAnalysis suite, and which is fully optimised for GSR analysis including classification and reporting to the 2016, 2017 and 2020 versions of ASTM-E1588 standard.

Designed for analysis according to industry best practice guidelines, AZtecGSR uses a workflow-based approach to guide both expert and novice users through GSR analysis, with in-interface instructions to provide additional guidance. It also includes a series of advanced functionalities designed to assist in dealing with the very small particles that are often found in GSR analysis, as well as approaches for improving throughput and efficiently running a large number of samples.

AZtecGSR uses Oxford Instruments’ Ultim Max or Xplore EDS detectors in combination with AZtecLive’s TruQ® algorithms to ensure accurate element identification and quantification, even at the highest levels of throughput.

Customised for GSR

Optimised analytical recipe for GSR analysis
Classify to ASTM-E1588 16, 17 & 20
Includes a classification scheme that indicates which brand of ammunition may have been used
Manual and automatic reacquisition modes
Confirmation routine for reacquired particles

Flexible

Add new classifications for new ammunitions
Option to automatically acquire additional data from particles containing key elements
Terminate analyses automatically when sufficient evidence has been acquired
Works with a wide range of SEMs
Use the same software platform to analyse with other techniques (e.g., WDS, EBSD).

Fast

Analysis rates > 120,000 particles per hour (dependent on hardware configuration)
Combine up to 4 Ultim Max detectors for the ultimate in throughput
Simultaneously manage multiple analysis runs

Certainty

2-pass imaging for small particle accuracy without compromising speed
Routinely used globally to detect 100% of particles on PLANO and ENFSI test samples
Image calibration sample and software ensure particles are detected the same way every run
Automatically compensate for changes to image contrast/brightness in-run

*Run progress over multiple fields in an automated GSR analysis (video speed increased).

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AZtecGSR

AZtecGSR automates the analysis of Gunshot Residue Analysis in the SEM to provide fast, accurate and reproducible results to ASTM E1588 - 16 & 17.

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AZtec Gunshot Residue Analysis

This four page application note illustrates how Gunshot Residue Analysis is performed in AZtec.

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Light Element Particle Analysis - GSR from heavy metal free primers

The combination of Ultim^®Extreme and AZtecGSR enables the automated detection of particles containing light elements such as boron at very short acquisition times.

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