On 24th May 2018, Trescal acquired RS Calibration Services – The leader in delivering quality engineering, calibration & validation services to the FDA environment.


    RS Calibration Services offers a full range of Lab based calibration services to our customers focused on the FDA Environment. Being a 17025 Accredited Lab provides the confidence our customers seek in identifying a one stop calibration service that will meet the unique requirements of the FDA and cGMP environments.


    RS Calibration Services offers the largest team of fully trained Field Service Instrument Technicians focused exclusively on the FDA Environment. Providing a full range of Onsite Calibration Service, RS Calibration seeks to minimize any downtime associated with Annual Calibration requirements.


    We use the best in quality industry-standard validation equipment to provide you with reliable and repeatable results on every temperature mapping validation project. Our inventory of mapping validation equipment allows flexibility in choosing the data-points and parameters to include in the temperature mapping validation study.


    Quality Engineering offers consulting services through an experienced team of professionals in Qualification & Validation. Well-versed in the FDA field, these custom engagements provide project management & engineering resources through a process oriented methodology (POM) from planning to operational excellence.


    Welcome to RS Calibration Services newsletter. This newsletter is designed to provide the latest news about our company and the services we provide. In addition, we plan to include specific information on the measurement industry that will be of value to you.

    Download our latest issue - May'17 Edition

    Our QA Program


    RS Calibration Services, Inc. is committed to customer satisfaction through establishing, implementing, maintaining, and improving a quality management system with the quality objectives appropriate to meet the requirements of ISO/IEC 17025:2005, ISO 9001:2015, customers, and regulatory authorities.


    Featured News

    27 June 2019

    As you know, last May Ralph Sabiel sold RS Calibration to Trescal after 24 years since its founding in 1995. Ralph remained with the company and played an active role in beginning the transition to be part of Trescal. We appreciate his leadership and support throughout the past year.


    “Thank you all for coming together, being flexible and accommodating our urgent request. You all make a FANTASTIC Team!” Your technician strives to provide excellent service by taking the time to listen and understand our company business needs. He arrives with a professional and very friendly attitude. His knowledge and experience demonstrates excellent work.”

    “You guys have been Great! Thank goodness for your support.”

    “I have always had great experiences working with RS technicians. They demonstrate an understanding of safety in the labs as well."

    “It’s very important to have positive and open relationships between suppliers and customers. RS Calibration has a strong, compliant and effective quality system and a great equipment management system as well. People are well trained in their respective roles and clearly show they care about their customers”

    “Want to send an extra special thank you to your Technician for his efforts today. He was a tremendous help with checking on something that an end user was not pleased with in between his scheduled calibration. It was very cool of him to jump in and help us get a speedy answer without a second thought. It is always a pleasure working with him. He is punctual, attentive and thorough with his job. Just wanted to share with you and hopefully you can pass this along!”

    “Based on what we observed during the visit, RS Calibration has a very comprehensive Quality System with tight controls over the calibration/preventative maintenance procedures. In addition, the facility was extremely tidy and well organized. The employees were very helpful in answering any questions that we posed and the demeanor of the company was collaborative and supportive”

    "I wanted to thank you and your excellent team for their impeccable service and speed during the latest round of onsite maintenances."

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1047 Serpentine Lane, Suite 500, Pleasanton, CA 94566
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