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Working with the New MDL


Thirty years after initial publication of the 40 CFR Part 136 Method Detection Limit (MDL) procedure, EPA has proposed to revise the procedure, following a collaborative development process between TNI and EPA. This presentation will discuss the reasons for the changes and examine practical ways in which laboratories can efficiently comply with the new requirements.


Class participants will know how to apply the new MDL procedure.


CEUs: 0.1

Course Fee:
$25 for TNI members; $35 for all others; $75 group rate

TNI Members: you must be logged-in to the website to receive the member rate.

About Webcasts:
 Upon receipt of your payment, you will receive a special link by e-mail to watch the webcast on your computer. The link is time-limited: you will have full access to the webcast and any associated handouts for 6 months after receipt of payment, at which time the link will expire. Webcasts cannot be downloaded; they are intended for viewing on your computer only during the 6-month window. If you have any questions, please contact Ilona Taunton at

No certificates are provided with webcasts.  If you wish to receive a Certificate of Attendance for your records, there will be an additional $15 charge per person.  Contact Ilona Taunton at if you need a certificate.

Group rates are available: Each purchased webcast is to be viewed by only one student. If you would like multiple viewers, separate purchases must be made. A group rate of $75 is available for groups of 5 or more students at a single location. Click hereto purchase this webcast at the group rate.


1 hour

This course has been reviewed and approved by TNI.

Presented By:

Richard Burrows

About the Presenter:
Dr. Burrows has a Ph.D. in analytical chemistry from the University of Bristol, and over 25 years of experience in environmental analysis. He is currently a Corporate Technical Director at TestAmerica, and Chair of the TNI Chemistry Expert Committee.