
Founded in 2009 by CEO John Erwin Juson and COO Ma. Victoria Juson, Sonju Metrology Solutions Inc. is a Filipino-owned calibration laboratory trusted by industries across the Philippines. As an ISO/IEC 17025:2017 accredited facility, we deliver reliable calibration services with traceable and accurate measurement results.
Backed by a team
Founded in 2009 by CEO John Erwin Juson and COO Ma. Victoria Juson, Sonju Metrology Solutions Inc. is a Filipino-owned calibration laboratory trusted by industries across the Philippines. As an ISO/IEC 17025:2017 accredited facility, we deliver reliable calibration services with traceable and accurate measurement results.
Backed by a team of technical experts, responsive customer service, and a strategically located facility, Sonju Metrology Solutions Inc. provides efficient support to clients nationwide. We maintain the necessary accreditations and permits and are a proud member of OneLab.

Deliver accurate, reliable, and traceable calibration services within our defined scope by upholding the highest standards of technical competence, impartiality, integrity, and care for our people. We commit to meeting ISO/IEC 17025:2017, statutory, regulatory, and customer
requirements while continually improving our processes to support safe, compliant, and efficient operations.

Be a nationally trusted and technically respected calibration laboratory, recognized for excellence in measurement science, impartiality, and risk-based decision-making. We envision a culture where competence, innovation, people-centered leadership, and quality drive continual improvement and long-term value for our customers and stakeholders.

We uphold honesty, impartiality, and ethical conduct in all calibration and operational activities, ensuring trustworthy and unbiased results.

We deliver reliable, traceable, and value-adding calibration services that meet customer requirements and strengthen confidence in their operations.

We value and care for our people by fostering a respectful, safe, and supportive environment where teamwork, empathy, and accountability guide how we treat colleagues, customers and partners

We pursue technical competence, accuracy, and continual improvement in all aspects of our work, ensuring that our services consistently meet the highest standards.

We ensure measurement accuracy and traceability through validated methods, calibrated reference standards, and disciplined adherence to ISO/IEC 17025:2017 requirements.

We protect the integrity of our calibration results by remaining free from conflicts of interest and by actively identifying and managing risks to impartiality.

At Sonju, quality and reliability are at the core of everything we do. Our laboratory operates in accordance with internationally recognized standards to ensure that every calibration service we provide delivers accurate, reliable, and traceable measurement results.

Sonju Metrology Solutions Inc. is accredited to ISO/IEC 17025:2017, the international standard for the competence of testing and calibration laboratories.
This accreditation is granted by the Department of Trade and Industry – Philippine Accreditation Bureau (DTI-PAB), the national accreditation body of the Philippines, confirming our lab
Sonju Metrology Solutions Inc. is accredited to ISO/IEC 17025:2017, the international standard for the competence of testing and calibration laboratories.
This accreditation is granted by the Department of Trade and Industry – Philippine Accreditation Bureau (DTI-PAB), the national accreditation body of the Philippines, confirming our laboratory’s compliance with requirements for technical competence, quality management, and measurement traceability
Accreditation Validity:
Valid until March 14, 2027

Sonju Metrology Solutions Inc. (previously known as Sonju Engineering Services) is a member of OneLab, a nationwide network of calibration and testing laboratories in the Philippines under the Department of Science and Technology (DOST).
Through this network, we collaborate with laboratories across the country to support industries with a
Sonju Metrology Solutions Inc. (previously known as Sonju Engineering Services) is a member of OneLab, a nationwide network of calibration and testing laboratories in the Philippines under the Department of Science and Technology (DOST).
Through this network, we collaborate with laboratories across the country to support industries with accessible, reliable, and high-quality testing and calibration services.



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