Twin Ports Testing II, Inc.
Duluth,
Minnesota
View Accreditation Certificate
Joseph
Beatrez
2320 Nick Glumac Drive
Duluth
,
Minnesota
55808
Phone: (952) 769-4240
Fax:
jbeatrez@twinportstesting.com
http://www.twinportstesting.com
Quality Management System - accredited since 2/15/1999
R18, C1077 (Aggregate), C1077 (Concrete), D3740 (Soil), E329 (Aggregate), E329 (Concrete), E329 (Soil)
Soil - accredited since 12/1/1999
R58, T88, T89, T90, T99, T100, T180, T265, T310, D421, D422, D698, D854, D1557, D2216, D4318, D6913, D6938, D7928
Aggregate - accredited since 2/15/1999
R76, T11, T27, T84, T85, T255, C117, C127, C128, C136, C566, C702
Concrete - accredited since 2/15/1999
M201, R39, R60, R100 (Cylinders), T22, T119, T121, T152, T196, T309, C31 (Cylinders), C39, C138, C143, C172, C173, C192, C231, C511, C1064, C1231 (7000 psi and below)
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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