ISO

Comparison chart of ASTM vs ISO transmission loss standards, showing ASTM with STC and U.S.-specific use, and ISO with Rw rating, global methodology, and spectrum corrections.

ASTM vs ISO Transmission Loss Measurements in Thailand | Acoustic Laboratory Thailand

ASTM, ISO /

ASTM vs ISO Transmission Loss Measurements in Thailand | Acoustic Laboratory Thailand ASTM vs ISO Transmission Loss Measurements: Why Thailand Follows ASTM Standards and What the Future Holds At Acoustic Laboratory Thailand, an ISO17025 accredited acoustic laboratory, we are often asked about the differences between ASTM and ISO transmission loss measurements. While both frameworks are […]

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How to use a boom in an acoustic laboratory

Standards and Testing of Sound Barriers

ISO, Sound Absorption, Sound Transmission Class, Weighted Sound Reduction Index /

Standards and Testing of Sound BarriersThe effectiveness of a sound barrier cannot be assessed by design or materials alone—it must be verified with internationally recognized test results. Acoustic Laboratory Thailand Co., Ltd. (ALT) offers expert sound barrier testing in a laboratory setting (Lab Test) according to the following international standards: Laboratory Test 1. Sound Transmission

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Testing of STC (Sound Transmission Class) and Rw (Weighted Sound Reduction Index)

Testing of STC (Sound Transmission Class) and Rw (Weighted Sound Reduction Index)

ISO, Sound Transmission Class, Weighted Sound Reduction Index /

Sound Transmission Class and Weighted Sound Reduction Index test Acoustic Laboratory Thailand Co., Ltd. (ALT) provides sound insulation testing services for wall systems, doors, windows, and glass according to international standards ASTM E90 and ISO 10140-2. The tests are conducted using the Twin Reverberation Chambers method, with completely isolated chambers. Our test facility is designed

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Calibration of sound meters according to standards

Calibration, ISO /

Using standardized sound measurement instruments also requires standardized calibration. It is important to choose a calibration laboratory that is certified to ISO/IEC17025 standards. But this is not all to look out for, the laboratory should also be accredited for the required methods and standards for the calibration of instruments. ISO/IEC17025 has a wide range and

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ALT, Acoustic Laboratory (Thailand) Achieves ISO 17025 Accreditation, Demonstrating Commitment to Excellence in Acoustic Testing 

ISO /

[Bangkok, Thailand, 18 December 2023] – ALT, Acoustic Laboratory (Thailand), a leading provider of acoustic testing services in Thailand, is proud to announce that it has achieved ISO 17025 accreditation, a significant milestone that underscores the company’s dedication to delivering high-quality and reliable acoustic testing solutions.  ISO 17025 is an internationally recognized standard that specifies

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What is ISO/IEC 17025

ISO /

What is ISO/IEC 17025:2017? ISO/IEC 17025 Standards for the competence of testing and calibration laboratories, is the main ISO standard used for testing and calibration laboratories and is used worldwide, and is the same across the globe despite the different names that you may come across. Each country has their own entity authorized by ISO that manages the

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