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P: 202-261-4510 • F: 202-835-0440 •

U.S. Enrollment

MLE Proficiency Testing Program Enrollment Information

There are many ways to place your order for the MLE program:
Or, call MLE Customer Service at 202-261-4510 or e-mail us at for a free catalog or for more information about our MLE program.

US Catalog and Calendar

Order Selection Assistance

MLE Customer Service can ensure you enroll in the most economical order option for the tests you perform. Simply submit a complete list of the tests you perform INCLUDING the instruments/methods used to, and a Customer Service Representative will respond with the most economical order. Or, call us at 800-234-5315, option 3, for order selection assistance.

Forms for New Enrollees

Forms & Information for Current Enrollees

Change Orders and New Orders Placed After the First Shipment

Contact us with any questions at 202-261-4510 or via email at