Certified & Accredited Testing of Building Materials and Consumer Products

NVLAP Accredited Laboratory

NVLAP LAB CODE: 100227-0

ABOUT RIVERBANK

Founded in 1918 by Wallace Clement Sabine, Riverbank Acoustical Laboratories® (RAL) is recognized worldwide as a source of valid acoustical data in numerous commercial, civilian, and military specifications. Our acoustical engineers support clients with certified & accredited testing of building materials and consumer products, providing both the data and the expertise to identify solutions that give a measurable advantage to meet or exceed industry standards.

With a staff of experts and advanced equipment, including six reverberation chambers as well as a fully equipped machine and tool shop, our team provides certified testing and analysis for sound transmission, absorption, and intensity for all kinds of building materials and consumer items, ranging from engines to hair dryers. We also develop solutions for equipment vibration isolation, noise abatement, and active silencing.

The principal tests performed in the reverberation chambers involve sound absorption, sound transmission loss, impact sound transmission, sound power, sound pressure, and dB(A) measurements— all of which are monitored in a central control room. Whether NRC tests, E90 testing, STC tests, or other acoustical testing, we provide clients with printouts, including both data and graphical presentations, immediately following the completion of each test.

RAL is accredited by the National Institute of Standards and Technology (NIST) through the National Voluntary Laboratory Accreditation Program (NVLAP Lab Code 100227) for selected acoustical testing services conducted in accordance with established standards.

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Client Feedback

What Our Customers Say

Trusted by manufacturers, engineers, and researchers who rely on accurate acoustical testing.

  • We were able to witness the testing for a limited time. The final reports were delivered in a very timely manner, and the results—while outside of RAL’s control—were in line with or better than our expectations.

    Barry Bekharry

    Technical Services Manager, ROCKWOOL

  • Your team’s willingness to walk through test plans, explain results in detail, and collaborate on complex acoustical challenges has been instrumental to our product development, and it is a level of partnership we rely on and deeply appreciate.

    Charles Griffin

    Director of Product Integrity and Quality, Carnegie

  • Eric has always been very responsive and patient with my questions. I am not familiar with the testing, so he has been very helpful.

    Stacey Miller

    Senior Lab Coordinator, Element Material Technology

  • Riverbank always puts the customer first and tries to accommodate everyone according to their schedule very well.

    Matthew Hopper

    Engineer, ASC Profiles

  • Y'all were unbelievably welcoming to the driver (me). I loved the tour and learning more about your work.

    Mark Mobley

    University of Georgia Performing Arts Center

Understanding Sound Transmission Class (STC) Ratings and Testing: What Is It and What Do The Results Mean?

Sound Transmission Class (STC) is a single number that describes the ability of a building material or partition to block airborne sound. STC is a laboratory test result defined by ASTM E413 for sound transmission loss testing performed according to ASTM E90.

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