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AASHTO Accreditation
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The gold standard for laboratory accreditation in the construction industry

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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

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Extra Proficiency Samples

Extra proficiency samples (XPSs) are available for sale in limited quantities. XPSs may be purchased for training of technicians, verification of testing or equipment, inter-laboratory studies, and for addressing accreditation issues related to proficiency sample testing. Please note that Soil and Aggregate XPSs purchased to resolve AASHTO Accreditation Program (AAP) issues related to proficiency testing will only include one sample, rather than two.

Only XPSs purchased to address AASHTO Accreditation issues related to proficiency testing (blind samples) will automatically receive rating sheets. Laboratories may request rating sheets for other XPSs for an additional $100 fee. XPSs ratings sheets may also be determined by the participating laboratory based on published sample round analysis information for the specific samples purchased.

All payments are required before extra samples will be shipped.

Please direct inquiries to AASHTO re:source as follows:

Phone: (240) 436-4900
Email: psp@aashtoresource.org

Domestic (US and Canada) Fees

Sample Type 2026 Regular XPS Fee (per box) 2026 Accreditation XPS Fee (per box) 2027 Regular XPS Fee (per box) 2027 Accreditation XPS Fee (per box)
Aggregate Degradation $100.00 $200.00 $105.00 $210.00
Aggregate Gradation and Gravity $195.00 $390.00 $200.00 $400.00
Soil Classification / Compaction $137.50 $275.00 $142.50 $285.00
Soil Corrosivity and Chemistry $80.00 $160.00 $80.00 $160.00
Soil CBR $137.50 $275.00 $142.50 $285.00
Soil R-Value $137.50 $275.00 $142.50 $285.00
Soil-Cement Mixtures $137.50 $275.00 $137.50 $275.00
Viscosity Graded Asphalt Cement** $155.00 $155.00 $155.00 $155.00
Performance Graded Binder** $155.00 $155.00 $155.00 $155.00
Asphalt Mixture Marshall Design** $335.00 $335.00 $340.00 $340.00
Asphalt Mixture Hveem Design (Any Compaction)** $335.00 $335.00 $340.00 $340.00
Asphalt Mixture Gyratory** $345.00 $345.00 $340.00 $340.00
AASHTO T 100 Mineral Filler Gravity $50.00 $50.00 $50.00 $50.00
Asphalt Mixture Solvent Extraction** $345.00 $345.00 $325.00 $325.00
Asphalt Mixture Ignition Oven** $365.00 $365.00 $375.00 $375.00
Hamburg Wheel Track $255.00 $255.00 $255.00 $255.00
Winter Maintenance Products $127.50 $127.50 - -
Due to custom changes related to imports to Canada, all Canadian labs are responsible for paying the duties and taxes for all sample shipments.  

International Fees

Sample Type 2026 Regular XPS Fee (per box) 2026 Accreditation XPS Fee (per box) 2027 Regular XPS Fee (per box) 2027 Accreditation XPS Fee (per box)
Aggregate Degradation $250.00 $350.00 $255.00 $360.00
Aggregate Gradation and Gravity $345.00 $540.00 $350.00 $550.00
Soil Classification / Compaction $287.50 $425.00 $292.50 $435.00
Soil Corrosivity and Chemistry $230.00 $230.00 $230.00 $230.00
Soil CBR $287.50 $425.00 $292.50 $435.00
Soil R-Value $287.50 $425.00 $292.50 $435.00
Soil-Cement Mixtures $287.50 $425.00 $287.50 $425.00
Viscosity Graded Asphalt Cement** $305.00 $305.00 $305.00 $305.00
Performance Graded Binder** $305.00 $305.00 $305.00 $305.00
Asphalt Mixture Marshall Design** $485.00 $485.00 $490.00 $490.00
Asphalt Mixture Hveem Design (Any Compaction)** $485.00 $485.00 $490.00 $490.00
Asphalt Mixture Gyratory** $495.00 $495.00 $475.00 $475.00
AASHTO T 100 Mineral Filler Gravity $75.00 $75.00 $75.00 $75.00
Asphalt Mixture Solvent Extraction** $495.00 $495.00 $475.00 $475.00
Asphalt Mixture Ignition Oven** $515.00 $515.00 $525.00 $525.00
Hamburg Wheel Track $277.50 $405.00 $277.50 $405.00
Winter Maintenance Products $277.50 $405.00 - -

**These samples are only shipped and sold in pairs. Customers requesting these sample types will be charged the full price.

Note: Effective July 1, 2015, laboratories requesting express or overnight shipping of samples will be charged a shipping and handling fee.

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