Dear Customers,
Our business continues to operate as usual, and we will continue to handle all enquiries and support requests in a timely manner. Please note that Singapore Assay Office (SAO) is closed until 4 May 2020. As we navigate through these challenging times, we thank you for your continued support and confidence in us. Our offices are adhering closely to the latest advisories and precautionary measures from the local health authorities, please be assured that we are taking steps to ensure uninterrupted service and support as we comply with these additional measures.

STS Opening Hours - Weekdays: 8am – 5:30pm


About Us

The leading test, inspection, certification, calibration and training services company in the Asia Pacific Region.

Singapore Test Services (STS) is a pioneer in testing, inspection, calibration and certification services. We help companies across industries meet safety, quality and performance standards.

Our Mission

To be our customers' preferred partner for test, inspection, certification, calibration & training services that meet their quality, maintenance, environment, health and safety conformance needs.

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Consumer Products

Chemical, Oil & Gas


Power & Energy


Real Estate

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