Hours:
Geotechnical Engineering &
Construction Materials Testing
Certified Testing Services, Inc. has a full-service aggregate testing laboratory with the latest equipment. Our certified technicians will perform laboratory testing, field inspections, and field testing to ensure that the project inspections are being met. We have a fast turnaround time for reports. Call us today for your aggregate testing and inspection needs.
For detailed and reliable aggregate inspection services, reach out to us now.
Certified Aggregate Testing Laboratory Producing Fast and Reliable Results
Call us for a FREE estimate!
Sioux City, IA - (712) 252-5132
Storm Lake, IA - (712) 213-8378
Serving locations in Iowa, Nebraska, South Dakota, and Minnesota. Click here for more details.
1330 Michigan St
Storm Lake, IA 50588
Saturday and Sunday Hours By Appointment Only
Serving locations in Iowa, Nebraska, South Dakota, and Minnesota. Click here for more details.
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