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Interpretation of Lubricant Evidence
100 minutes
There has been a marked increase in the use of lubricants in sexual assault crimes in recent years.  Lubricants may be used to facilitate an act, be present in the background of samples, or be transferred due to the use of lubricated condoms.  The course will provide background information on the types of samples that are typically encountered in lubricant analyses including commercial sexual lubricants, improvised lubricants and condoms.  The webinar will touch on the analytical methods employed to examine lubricants, focusing on their capabilities and limitations.  An introduction to quantitative analyses of lubricant materials will be explored.  The webinar will discuss in-house studies focused on improving methodologies and increasing specificity, as well as foundation validation studies demonstrating the effectiveness of lubricant analyses.  The course will conclude with factors which affect the interpretation of evidence and reporting of lubricant results.  Upon completion of the webinar, attendees should have sufficient foundational information to interpret results and provide reports on the analysis of lubricants in casework. 

This webinar was recorded in its entirety at the time of the live event in order to capture the one on one interaction with the presenter.


Jeffrey Dake
Forensic Chemist employed by the Defense Forensic Science Center

This event is funded through a Cooperative Agreement (2011-DN-BX-K564) from the National Institute

of Justice (NIJ), Office of Justice Programs (OJP), and U.S. Department of Justice (USDOJ). The views,

policies, and opinions expressed are those of the authors and contributors and do not necessarily reflect

those of the NIJ, OJP, or USDOJ.