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

55+ 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
Aggregate Degradation - AGD5/612/7/20231/18/20242/1/20244/18/20245/2/2024
Soil Classification and Compaction - SOL189/1901/15/20243/7/20243/21/20245/9/20245/23/2024
Soil Resistance R-Value - RVL189/1901/15/20243/14/20243/28/20245/9/20245/23/2024
Soil California Bearing Ratio - CBR189/1901/15/20243/14/20243/28/20245/9/20245/23/2024
Performance Graded Asphalt Binder - PGB275/2762/1/20243/21/20244/4/20245/16/20245/30/2024
Viscosity Graded Asphalt Cement - BAC275/2762/1/20243/28/20244/25/20245/30/20246/13/2024
Asphalt Mixture Marshall Design - MAR81/824/18/20245/23/20246/6/20247/11/20248/1/2024
Asphalt Mixture Hveem Design by 4-in Gyratory Compaction - HCO3/44/18/20245/23/20246/6/20247/11/20248/1/2024
Asphalt Mixture Hveem Design by California Kneading Compaction - HCA3/44/18/20245/23/20246/6/20247/18/20248/8/2024
Asphalt Mixture Hveem Design by Gyratory Shear Compaction - HTX3/44/18/20245/23/20246/6/20247/18/20248/8/2024
Asphalt Mixture Gyratory - HMG57/584/18/20245/30/20246/13/20247/25/20248/8/2024
Aggregate Gradation and Gravity - AGG5/65/1/20247/25/20248/8/20249/19/202410/3/2024
Polymer-Modified Emulsified Asphalt - PME3/45/1/20248/1/20248/15/20249/19/202410/3/2024
Unmodified Emulsified Asphalt - EML81/825/1/20248/22/20249/5/202410/17/202410/31/2024
Hamburg Wheel Track - HWT1/27/1/20248/29/20249/12/202410/24/202411/7/2024
Slurry and Micro Systems - SMS15/167/1/20249/12/20249/21/202411/7/202411/21/2024
Paint - PNT73/747/1/20249/19/202410/3/202411/14/202411/28/2024
Asphalt Mixture Solvent Extraction - HMS101/1028/1/202410/17/202410/31/202412/12/202412/26/2024
Asphalt Mixture Ignition Oven - HMI49/508/1/202411/14/202411/28/20241/9/20251/23/2025
Performance Graded Asphalt Binder - PGB277/2782/1/202411/21/202412/5/20241/16/20251/30/2025
Viscosity Graded Asphalt Cement - BAC277/2782/1/202411/28/202412/12/20241/23/20252/13/2025
Winter Maintenance Products - WMP1/28/1/202412/12/202412/26/20242/6/20252/20/2025
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.