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"“…if you do everything that the AASHTO accreditation requires you to do, if you execute all of the requirements of [AASHTO re:source], you will have a well-run laboratory."

Florida Department of Transportation

Tim Ruelke, P.E., Director, Office of Materials

50 years of experience
PSP participants
samples shipped per year
laboratory assessments per year
accredited labs

AASHTO re:source's Proficiency Sample Program: A Visual Approach

By Kimberly Swanson, Communications Manager

Posted: November 2012

Ever wonder what is actually behind the all of the AASHTO re:source proficiency samples you receive? How long it takes to process them, or where samples are shipped? Previous articles on this topic include: "Not Just a Box of Rocks: An Introduction to the AMRL Proficiency Sample Program," "Proficiency Sample Ratings: Being Average Has Never Been So Good," and "Getting the Most Out of the Proficiency Sample Program: A Guide to Our Online Features and Tools." These articles can give you a great understanding of the program, but they only tell you what you need to know. Check out this infographic for a visual representation of our proficiency sample program.



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  1. Kimberly Swanson | Jan 22, 2018
    Soil Classification and Compactions samples only have 1 bag of material when shipped. 
  2. mohd azzam | Jan 17, 2018
    why we have got two bags in the box ( soil classification and compaction ) ? 

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