---
title: The Particle Articles | trace evidence
description: trace evidence | Gateway Analytical's blog gives you explores the world of pharmaceutical investigations, materials analysis, metal cleanliness testing, and general science fun!
---

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# The Particle Articles

## [Q&A Recap for What Police & Attorneys Need to Know about Condom Lubricant Analysis](https://info.gatewayanalytical.com/particle-articles/blog/qa-recap-for-what-police-attorneys-need-to-know-about-condom-lubricant-analysis)

 \[fa icon="calendar'\] Aug 9, 2013 6:00:37 AM / by [Admin](https://info.gatewayanalytical.com/particle-articles/author/admin) posted in [Blog](https://info.gatewayanalytical.com/particle-articles/topic/blog), [condom lubricant analysis](https://info.gatewayanalytical.com/particle-articles/topic/condom-lubricant-analysis), [forensic analysis](https://info.gatewayanalytical.com/particle-articles/topic/forensic-analysis), [Forensics](https://info.gatewayanalytical.com/particle-articles/topic/forensics), [FTIR](https://info.gatewayanalytical.com/particle-articles/topic/ftir), [PDMS](https://info.gatewayanalytical.com/particle-articles/topic/pdms), [trace evidence](https://info.gatewayanalytical.com/particle-articles/topic/trace-evidence), [trace evidence analysis](https://info.gatewayanalytical.com/particle-articles/topic/trace-evidence-analysis)

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On August 6th, Cara Plese, M.S., Scientist I and Antonio Scatena, Laboratory Manager at Gateway Analytical hosted a webinar designed for police and attorneys on the topic of condom lubricant analysis. During this webinar, our presenters provided an in depth explanation of the analysis of condom lubricants and gave insight into many of the variables that can influence the results of a test, including appropriate collection time, the location of sampling, and the type of condom used in an assault. The presenters focused on the results of condom lubricant analysis and discuss what can be determined once a sample has been tested.

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[![](https://info.gatewayanalytical.com/hubfs/Imported_Blog_Media/iStock_000006580587XSmall-150x150.jpg)](https://info.gatewayanalytical.com/particle-articles/blog/what-police-and-attorneys-need-to-know-about-condom-lubricant-analysis)

## [What Police and Attorneys Need to Know about Condom Lubricant Analysis](https://info.gatewayanalytical.com/particle-articles/blog/what-police-and-attorneys-need-to-know-about-condom-lubricant-analysis)

 \[fa icon="calendar'\] Aug 6, 2013 9:40:58 AM / by [Admin](https://info.gatewayanalytical.com/particle-articles/author/admin) posted in [Blog](https://info.gatewayanalytical.com/particle-articles/topic/blog), [condom lubricant analysis](https://info.gatewayanalytical.com/particle-articles/topic/condom-lubricant-analysis), [forensic analysis](https://info.gatewayanalytical.com/particle-articles/topic/forensic-analysis), [Forensics](https://info.gatewayanalytical.com/particle-articles/topic/forensics), [Forensic Webinar Recordings](https://info.gatewayanalytical.com/particle-articles/topic/forensics-webinars), [trace evidence](https://info.gatewayanalytical.com/particle-articles/topic/trace-evidence), [trace evidence analysis](https://info.gatewayanalytical.com/particle-articles/topic/trace-evidence-analysis)

[\[fa icon="comment"\] 0 Comments](https://info.gatewayanalytical.com/particle-articles/blog/what-police-and-attorneys-need-to-know-about-condom-lubricant-analysis#comments-listing)

 

 Condom Lubricant Analysis 

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## [Value of Presumptive Screening of Physical Evidence Q&A Recap](https://info.gatewayanalytical.com/particle-articles/blog/value-of-presumptive-screening-of-physical-evidence-qa-recap)

 \[fa icon="calendar'\] May 7, 2013 11:25:02 AM / by [Admin](https://info.gatewayanalytical.com/particle-articles/author/admin) posted in [Blog](https://info.gatewayanalytical.com/particle-articles/topic/blog), [forensic analysis](https://info.gatewayanalytical.com/particle-articles/topic/forensic-analysis), [Forensics](https://info.gatewayanalytical.com/particle-articles/topic/forensics), [gunshot residue](https://info.gatewayanalytical.com/particle-articles/topic/gunshot-residue), [microscopic analysis](https://info.gatewayanalytical.com/particle-articles/topic/microscopic-analysis), [physical evidence](https://info.gatewayanalytical.com/particle-articles/topic/physical-evidence), [presumptive screening](https://info.gatewayanalytical.com/particle-articles/topic/presumptive-screening), [trace evidence](https://info.gatewayanalytical.com/particle-articles/topic/trace-evidence), [Trace Evidence](https://info.gatewayanalytical.com/particle-articles/topic/trace-evidence-forensics)

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On April 30th, Dave Exline, Senior V.P. and Cara Plese, M.S., Scientist I at Gateway Analytical hosted a webinar designed for police and attorneys involved in cases with physical evidence. During this webinar, our presenters discussed the advantages of microscopic and presumptive screenings of physical evidence, especially suspected bodily fluid stains and hair prior to advancing to more expensive DNA analysis. They also provide examples of such screenings and discussed how these screening methods can save valuable time, money and resources by eliminating samples from being forwarded onto unnecessary further analysis.

[Read More \[fa icon="long-arrow-right"\]](https://info.gatewayanalytical.com/particle-articles/blog/value-of-presumptive-screening-of-physical-evidence-qa-recap)

[![](https://info.gatewayanalytical.com/hubfs/Imported_Blog_Media/AAFS1.jpg)](https://info.gatewayanalytical.com/particle-articles/blog/aafs-2013-presenataion-what-judges-and-lawyers-need-to-know-about-the-science-behind-trace-evidence)

## [AAFS 2013 Presenataion: What Judges and Lawyers Need to Know about the Science Behind Trace Evidence](https://info.gatewayanalytical.com/particle-articles/blog/aafs-2013-presenataion-what-judges-and-lawyers-need-to-know-about-the-science-behind-trace-evidence)

 \[fa icon="calendar'\] Mar 4, 2013 10:01:15 AM / by [Admin](https://info.gatewayanalytical.com/particle-articles/author/admin) posted in [AAFS 2013](https://info.gatewayanalytical.com/particle-articles/topic/aafs-2013), [Blog](https://info.gatewayanalytical.com/particle-articles/topic/blog), [crime scene investigation](https://info.gatewayanalytical.com/particle-articles/topic/crime-scene-investigation), [forensic expert](https://info.gatewayanalytical.com/particle-articles/topic/forensic-expert), [forensic science](https://info.gatewayanalytical.com/particle-articles/topic/forensic-science), [forensic scientists](https://info.gatewayanalytical.com/particle-articles/topic/forensic-scientists), [Forensics](https://info.gatewayanalytical.com/particle-articles/topic/forensics), [forensics](https://info.gatewayanalytical.com/particle-articles/topic/forensics-2), [trace evidence](https://info.gatewayanalytical.com/particle-articles/topic/trace-evidence), [Trace Evidence](https://info.gatewayanalytical.com/particle-articles/topic/trace-evidence-forensics)

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Gateway Analytical scientists [Cara Plese](http://www.gatewayanalytical.com/blog/cara-plese-m-s-scientist-i/) and [Antonio Scatena](http://www.gatewayanalytical.com/blog/antonio-scatena-laboratory-manager/) recently presented at the [2013 AAFS Annual Meeting](http://www.aafs.org/aafs-2013-annual-meeting) in Washington DC. The presentation titled: "What Judges and Lawyers Need to Know about the Science Behind Trace Evidence" is now available for download.

[Read More \[fa icon="long-arrow-right"\]](https://info.gatewayanalytical.com/particle-articles/blog/aafs-2013-presenataion-what-judges-and-lawyers-need-to-know-about-the-science-behind-trace-evidence)

[![](https://info.gatewayanalytical.com/hubfs/Imported_Blog_Media/AAFS1-300x91.jpg)](https://info.gatewayanalytical.com/particle-articles/blog/gateway-analytical-to-present-in-jurisprudence-section-at-aafs-2013)

## [Gateway Analytical to Present in Jurisprudence Section at AAFS 2013](https://info.gatewayanalytical.com/particle-articles/blog/gateway-analytical-to-present-in-jurisprudence-section-at-aafs-2013)

 \[fa icon="calendar'\] Feb 5, 2013 2:34:46 PM / by [Cara Plese](https://info.gatewayanalytical.com/particle-articles/author/cara-plese) posted in [2013 AAFS Annual Meeting](https://info.gatewayanalytical.com/particle-articles/topic/2013-aafs-annual-meeting), [Blog](https://info.gatewayanalytical.com/particle-articles/topic/blog), [forensic expert](https://info.gatewayanalytical.com/particle-articles/topic/forensic-expert), [Forensics](https://info.gatewayanalytical.com/particle-articles/topic/forensics), [forensics](https://info.gatewayanalytical.com/particle-articles/topic/forensics-2), [scientific methods](https://info.gatewayanalytical.com/particle-articles/topic/scientific-methods), [trace evidence](https://info.gatewayanalytical.com/particle-articles/topic/trace-evidence), [Trace Evidence](https://info.gatewayanalytical.com/particle-articles/topic/trace-evidence-forensics)

[\[fa icon="comment"\] 0 Comments](https://info.gatewayanalytical.com/particle-articles/blog/gateway-analytical-to-present-in-jurisprudence-section-at-aafs-2013#comments-listing)

Gateway Analytical is very excited to be presenting at the [2013 AAFS Annual Meeting](http://www.aafs.org/aafs-2013-annual-meeting) in Washington DC this year!  [Cara Plese](https://info.gatewayanalytical.com/blog/cara-plese-m-s-scientist-i/) and [Antonio Scatena](https://info.gatewayanalytical.com/blog/antonio-scatena-laboratory-manager/) will be presenting “What Judges and Lawyers Need to Know about the Science Behind Trace Evidence” on Friday, February 22nd at 10:40am.  As our presentation date is quickly approaching, we wanted to give a short summary of what attendees should expect.

[Read More \[fa icon="long-arrow-right"\]](https://info.gatewayanalytical.com/particle-articles/blog/gateway-analytical-to-present-in-jurisprudence-section-at-aafs-2013)

[![](https://info.gatewayanalytical.com/hubfs/Imported_Blog_Media/DaveE1-239x300.jpg)](https://info.gatewayanalytical.com/particle-articles/blog/david-exline-president)

## [David Exline, President](https://info.gatewayanalytical.com/particle-articles/blog/david-exline-president)

 \[fa icon="calendar'\] Jan 29, 2013 9:50:34 AM / by [David Exline](https://info.gatewayanalytical.com/particle-articles/author/david-exline) posted in [analytical instrumentation](https://info.gatewayanalytical.com/particle-articles/topic/analytical-instrumentation), [analytical testing](https://info.gatewayanalytical.com/particle-articles/topic/analytical-testing), [Authors](https://info.gatewayanalytical.com/particle-articles/topic/authors), [Blog](https://info.gatewayanalytical.com/particle-articles/topic/blog), [chemical imaging](https://info.gatewayanalytical.com/particle-articles/topic/chemical-imaging), [crime scene investigation](https://info.gatewayanalytical.com/particle-articles/topic/crime-scene-investigation), [fluorescence microscopy](https://info.gatewayanalytical.com/particle-articles/topic/fluorescence-microscopy), [forensic expert](https://info.gatewayanalytical.com/particle-articles/topic/forensic-expert), [FTIR](https://info.gatewayanalytical.com/particle-articles/topic/ftir), [GMP](https://info.gatewayanalytical.com/particle-articles/topic/gmp), [hyperspectral imaging](https://info.gatewayanalytical.com/particle-articles/topic/hyperspectral-imaging), [light microscopy](https://info.gatewayanalytical.com/particle-articles/topic/light-microscopy), [pharmaceutical](https://info.gatewayanalytical.com/particle-articles/topic/pharmaceutical-2), [pharmaceutical forensics](https://info.gatewayanalytical.com/particle-articles/topic/pharmaceutical-forensics), [Raman chemical imaging](https://info.gatewayanalytical.com/particle-articles/topic/raman-chemical-imaging), [Raman spectroscopy](https://info.gatewayanalytical.com/particle-articles/topic/raman-spectroscopy), [spectroscopy](https://info.gatewayanalytical.com/particle-articles/topic/spectroscopy), [trace evidence](https://info.gatewayanalytical.com/particle-articles/topic/trace-evidence), [USP testing methods](https://info.gatewayanalytical.com/particle-articles/topic/usp-testing-methods)

[\[fa icon="comment"\] 0 Comments](https://info.gatewayanalytical.com/particle-articles/blog/david-exline-president#comments-listing)

 David Exline 

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## [Webinar Recap and Q&A for What Police & Attorneys Need to Know about Gunshot Residue Analysis](https://info.gatewayanalytical.com/particle-articles/blog/webinar-recap-and-qa-for-what-police-attorneys-need-to-know-about-gunshot-residue-analysis)

 \[fa icon="calendar'\] Jan 28, 2013 10:03:04 AM / by [Admin](https://info.gatewayanalytical.com/particle-articles/author/admin) posted in [Blog](https://info.gatewayanalytical.com/particle-articles/topic/blog), [crime scene investigation](https://info.gatewayanalytical.com/particle-articles/topic/crime-scene-investigation), [forensic expert](https://info.gatewayanalytical.com/particle-articles/topic/forensic-expert), [Forensics](https://info.gatewayanalytical.com/particle-articles/topic/forensics), [forensics](https://info.gatewayanalytical.com/particle-articles/topic/forensics-2), [GSR analysis](https://info.gatewayanalytical.com/particle-articles/topic/gsr-analysis), [gunshot residue analysis](https://info.gatewayanalytical.com/particle-articles/topic/gunshot-residue-analysis), [trace evidence](https://info.gatewayanalytical.com/particle-articles/topic/trace-evidence)

[\[fa icon="comment"\] 0 Comments](https://info.gatewayanalytical.com/particle-articles/blog/webinar-recap-and-qa-for-what-police-attorneys-need-to-know-about-gunshot-residue-analysis#comments-listing)

On January 22nd, Dave Exline, Senior V.P. and Rebekah Wagurak, Forensic Scientist at Gateway Analytical, hosted a webinar designed for police and attorneys and built upon the information provided in our previous webinar, “[Forensic Analysis of Gunshot Residue for Police & Attorneys](http://www.gatewayanalytical.com/webinar-replays/forensics-webinars/upcoming-webinar-forensic-gunshot-residue-analysis-for-police-attorneys/).”  During this webinar, our presenters provided police officers with tips on the proper collection of gunshot residue (GSR) evidence, as well as, the methodology used to analyze and interpret the data utilizing automated scanning electron microscopes (SEM).  Our presenters also took attendees into the courtroom, providing attorneys with insight into the significance of GSR evidence during a case, and what implications can be made from this type of evidence during expert testimony.

[Read More \[fa icon="long-arrow-right"\]](https://info.gatewayanalytical.com/particle-articles/blog/webinar-recap-and-qa-for-what-police-attorneys-need-to-know-about-gunshot-residue-analysis)

[![](https://info.gatewayanalytical.com/hubfs/Imported_Blog_Media/International-Logo-Web1.jpg)](https://info.gatewayanalytical.com/particle-articles/blog/prestigious-ascldlab-international-accreditation-for-forensic-trace-evidence-testing)

## [Gateway Analytical Achieves the Prestigious ASCLD/LAB-International Accreditation for Forensic Trace Evidence Testing!](https://info.gatewayanalytical.com/particle-articles/blog/prestigious-ascldlab-international-accreditation-for-forensic-trace-evidence-testing)

 \[fa icon="calendar'\] Nov 27, 2012 2:12:37 PM / by [Tricia Wood](https://info.gatewayanalytical.com/particle-articles/author/tricia-wood) posted in [ASCLD/LAB accreditation](https://info.gatewayanalytical.com/particle-articles/topic/ascldlab-accreditation), [ASCLD/LAB-International accreditation](https://info.gatewayanalytical.com/particle-articles/topic/ascldlab-international-accreditation), [Blog](https://info.gatewayanalytical.com/particle-articles/topic/blog), [forensic expert](https://info.gatewayanalytical.com/particle-articles/topic/forensic-expert), [Forensics](https://info.gatewayanalytical.com/particle-articles/topic/forensics), [forensics](https://info.gatewayanalytical.com/particle-articles/topic/forensics-2), [GSR analysis](https://info.gatewayanalytical.com/particle-articles/topic/gsr-analysis), [gunshot residue analysis](https://info.gatewayanalytical.com/particle-articles/topic/gunshot-residue-analysis), [ISO 17025](https://info.gatewayanalytical.com/particle-articles/topic/iso-17025), [quality assurance](https://info.gatewayanalytical.com/particle-articles/topic/quality-assurance-2), [quality control](https://info.gatewayanalytical.com/particle-articles/topic/quality-control), [trace evidence](https://info.gatewayanalytical.com/particle-articles/topic/trace-evidence), [Trace Evidence](https://info.gatewayanalytical.com/particle-articles/topic/trace-evidence-forensics)

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We are now one (1) of only two (2) private labs in the country that is accredited to this standard for trace evidence, and **we are the only private lab in the country to be accredited for gunshot residue analysis.**

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[![](https://info.gatewayanalytical.com/hubfs/Imported_Blog_Media/iStock_000009171422Small11-300x199.jpg)](https://info.gatewayanalytical.com/particle-articles/blog/what-lawyers-and-judges-need-to-known-about-the-science-behind-trace-evidence-examination)

## [What Lawyers and Judges Need to Known about the Science behind Trace Evidence Examination](https://info.gatewayanalytical.com/particle-articles/blog/what-lawyers-and-judges-need-to-known-about-the-science-behind-trace-evidence-examination)

 \[fa icon="calendar'\] Nov 15, 2012 11:00:30 AM / by [Admin](https://info.gatewayanalytical.com/particle-articles/author/admin) posted in [Blog](https://info.gatewayanalytical.com/particle-articles/topic/blog), [Evidence Transfer](https://info.gatewayanalytical.com/particle-articles/topic/evidence-transfer), [forensic investigations](https://info.gatewayanalytical.com/particle-articles/topic/forensic-investigations), [forensic science](https://info.gatewayanalytical.com/particle-articles/topic/forensic-science), [Forensics](https://info.gatewayanalytical.com/particle-articles/topic/forensics), [Scientific Method](https://info.gatewayanalytical.com/particle-articles/topic/scientific-method), [trace evidence](https://info.gatewayanalytical.com/particle-articles/topic/trace-evidence), [Trace Evidence Examination](https://info.gatewayanalytical.com/particle-articles/topic/trace-evidence-examination), [Trace Evidence](https://info.gatewayanalytical.com/particle-articles/topic/trace-evidence-forensics), [Upcoming Events](https://info.gatewayanalytical.com/particle-articles/topic/upcoming-events)

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At the upcoming [AAFS Annual Meeting](http://www.aafs.org/aafs-2013-annual-meeting), which is being held on February 18-23, 2013 in Washington, DC, Gateway Analytical will be giving a presentation on "What Lawyers and Judges Need to Known about the Science behind Trace Evidence Examination". Authored by [Cara Plese](http://www.gatewayanalytical.com/about-us/the-scientist/#Cara), [Antonio Scatena](http://www.gatewayanalytical.com/about-us/the-scientist/#Antonio), and [David Exline](http://www.gatewayanalytical.com/about-us/the-scientist/#Dave) this presentation will help attendees gain a general introduction and exposure to the scientific method employed in the analysis of trace evidence, as well as the conclusions that can be expected from the various types of trace evidence examinations.

[Read More \[fa icon="long-arrow-right"\]](https://info.gatewayanalytical.com/particle-articles/blog/what-lawyers-and-judges-need-to-known-about-the-science-behind-trace-evidence-examination)

## [Webinar Recap: Forensic Analysis of Paint and Tapes for Police & Attorneys](https://info.gatewayanalytical.com/particle-articles/blog/webinar-recap-forensic-analysis-of-paint-and-tapes-for-police-attorneys)

 \[fa icon="calendar'\] Aug 22, 2012 11:00:36 AM / by [Admin](https://info.gatewayanalytical.com/particle-articles/author/admin) posted in [Blog](https://info.gatewayanalytical.com/particle-articles/topic/blog), [crime scene investigation](https://info.gatewayanalytical.com/particle-articles/topic/crime-scene-investigation), [forensic expert](https://info.gatewayanalytical.com/particle-articles/topic/forensic-expert), [Forensics](https://info.gatewayanalytical.com/particle-articles/topic/forensics), [forensics](https://info.gatewayanalytical.com/particle-articles/topic/forensics-2), [paint analysis](https://info.gatewayanalytical.com/particle-articles/topic/paint-analysis), [tape analysis](https://info.gatewayanalytical.com/particle-articles/topic/tape-analysis), [trace evidence](https://info.gatewayanalytical.com/particle-articles/topic/trace-evidence), [Trace Evidence](https://info.gatewayanalytical.com/particle-articles/topic/trace-evidence-forensics)

[\[fa icon="comment"\] 0 Comments](https://info.gatewayanalytical.com/particle-articles/blog/webinar-recap-forensic-analysis-of-paint-and-tapes-for-police-attorneys#comments-listing)

On August 8th, David Exline, Senior V.P. & Court-Qualified Trace Evidence Expert and Rebekah Wagurak, Forensic Scientist at Gateway Analytical presented a webinar that covers the forensic investigation process for paint and tape evidence. Topics include the most current methods used for today’s investigators and discuss the interpretation of paint transfer evidence. Case studies related to the analysis of duct tapes, automotive and architectural paints were also discussed.

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