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Samples that drive quality

"I don’t think we would have the quality of the AB program that we do [without] having their involvement, maintaining the standard that we do. I think it’s helped us immensely."

New Hampshire Department of Transportation

Alan Rawson, Bureau of Materials & Research Administrator

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

Proficiency Sample Schedule

Sample TypeRoundEnrollment CutoffShip Date*Non-Receipt*Closing DateFinal Report
Fine Aggregate195/1961/2/20171/26/20172/9/20173/16/20173/30/2017
Soil Classification and Compaction175/1761/30/20172/16/20172/28/20174/6/20174/20/2017
Viscosity Graded Asphalt Cement247/2482/13/20173/2/20173/16/20174/13/20174/27/2017
Performance Graded Asphalt Binder247/2482/13/20173/9/20173/23/20174/20/20175/4/2017
Hot Mix Asphalt Hveem Design67/684/17/20176/1/20176/15/20177/13/20177/27/2017
Hot Mix Asphalt Marshall Design67/684/17/20176/1/20176/15/20177/20/20178/3/2017
Hot Mix Asphalt Gyratory43/445/30/20176/19/20177/3/20178/10/20178/24/2017
Emulsified Asphalt67/686/12/20177/6/20177/20/20178/17/20178/31/2017
Slurry and Micro Systems3/46/12/20177/6/20177/20/20178/17/20178/31/2017
Soil Resistance R-Value175/1766/26/20177/27/20178/10/20179/14/20179/28/2017
Soil California Bearing Ratio (CBR)175/1766/26/20177/27/20178/10/20179/21/201710/5/2017
Coarse Aggregate197/1987/24/20179/7/20179/21/201712/7/201712/21/2017
Viscosity Graded Asphalt Cement249/2508/21/20179/14/20179/28/201711/9/201711/30/2017
Performance Graded Asphalt Binder249/2508/21/20179/21/201710/5/201711/16/201712/7/2017
Hot Mix Asphalt Solvent Extraction87/8810/2/201711/9/201711/27/20171/4/20181/18/2018
Hot Mix Asphalt Ignition Oven35/3610/2/201712/7/201712/21/20172/8/20182/22/2018
Sample TypeRoundEnrollment CutoffShip Date*Non-Receipt*Closing DateFinal Report

NOTE: All dates are subject to change.

*Non-Receipt Date - the date by which your laboratory should receive a sample; please contact us if you have not received your sample by this date

*Closing Date - All testing data must be submitted and confirmed (by the laboratory) on or before this date. Data submitted after this date will not be included in the analysis and ratings will not be received.

*Enrollment Cutoff Date - If your laboratory is enrolled after this date, you will be placed on a Waiting List for that specific sample. If there are enough remaining samples, they will be shipped to your laboratory after the Non-Receipt Date and an invoice will follow by mail.