Princeton Technical Services Inc.
Chicago,
Illinois
View Accreditation Certificate
Ronald L.
Clauson
2945 W. Harrison Street
Chicago
,
Illinois
60612
Phone: (312) 666-2989
Fax:
rclauson@princetontechnical.com
/http://www.princetontechnical.com
Quality Management System - accredited since 1/10/2011
R18, C1077 (Aggregate), C1077 (Concrete), C1093 (Masonry), D3666 (Aggregate), D3666 (Asphalt Mixture), D3740 (Soil), E329 (Aggregate), E329 (Asphalt Mixture), E329 (Concrete), E329 (Masonry), E329 (Soil), E329 (Sprayed Fire-Resistive Material)
Asphalt Mixture - accredited since 12/13/2007
R47, T30, T164, T166, T209, T269, T283, T308, T312, D2041, D2172, D2726, D3203, D3549, D4867, D5444, D6307, D6925
Soil - accredited since 12/13/2007
R58, R74, T88, T89, T90, T99, T100, T180, T193, T208, T216, T265, T267, T289, T310, D421, D422, D698, D854, D1140, D1557, D1883, D2166, D2216, D2435, D2487, D2974, D4318, D6938
Aggregate - accredited since 12/13/2007
R76, R90, T11, T19, T21, T27, T84, T85, T96, T255, T304, C29, C40, C117, C127, C128, C131, C136, C566, C702, C1252, D75
Sprayed Fire-Resistive Material - accredited since 3/12/2012
E605, E736
Concrete - accredited since 9/22/2008
M201, R60, R100 (Beams), R100 (Cylinders), T22, T97, T119, T121, T152, T196, T231 (5000 psi and below), T309, C31 (Beams), C31 (Cylinders), C39, C78, C138, C143, C172, C173, C231, C511, C617 (5000 psi and below), C1064, C1231 (7000 psi and below)
Masonry - accredited since 9/22/2008
C140 (Reduced-Size Concrete Masonry Units) (Sampling and Testing Concrete Masonry Units and Related Units)
C511 (Moist Cabinets, Moist Rooms, and Water Storage Tanks Used in the testing of Hydraulic Cements and Concretes)
C780 (Annex 1) (Preconstruction and Construction Evaluation of Mortars for Plain and Reinforced Unit Masonry - Consistency by Cone Penetration)
C780 (Annex 6 - Cubes) (Preconstruction and Construction Evaluation of Mortars for Plain and Reinforced Unit Masonry - Compressive Strength of Cubes)
C780 (Annex 6 - Cylinders) (Preconstruction and Construction Evaluation of Mortars for Plain and Reinforced Unit Masonry - Compressive Strength of Cylinders)
C1019 (Sampling and Testing Grout)
C1552 (Capping Concrete Masonry Units, Related Units and Masonry Prisms for Compression Testing)
Please note that our accreditations do not include an expiration date. An accreditation only expires when the laboratory fails to comply with our accreditation requirements.
* This information is only valid as of 10/27/2026. Please visit https://aashtoresource.org for current accreditation status.
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