Mass Calibration Services in Southern California
Mass Calibration Services from QSI
Accurate mass measurement is fundamental to virtually every industry, from pharmaceutical manufacturing and chemical processing to shipping and logistics, food production, and precision manufacturing. When weighing instruments drift out of calibration, the consequences cascade through operations—causing dosing errors, inventory discrepancies, regulatory violations, shipping disputes, and significant financial losses.
Quality Surveillance, Inc., backed by the trusted Accredited Labs network, provides comprehensive mass calibration services that ensure your weighing systems deliver the precision and reliability your critical operations demand.
What is Mass Calibration?
Mass calibration is the systematic process of verifying and adjusting weighing instruments to ensure they accurately measure the mass of objects across their specified weighing ranges. This essential service compares your weighing instruments against certified reference mass standards with known, traceable values to identify any deviations from their specified accuracy ranges.
During mass calibration, skilled technicians evaluate each instrument's performance using certified test weights and standard masses throughout the instrument's weighing capacity. They document any measurement variations discovered and perform necessary adjustments to restore accuracy to manufacturer specifications. When instruments cannot be adjusted to meet their original specifications, detailed calibration reports provide the deviation data essential for your corrective actions and informed maintenance or replacement decisions.
The calibration process follows rigorous protocols established by international standards including NIST Handbook 44 and international weighing standards, ensuring consistency, reliability, and traceability. Each calibrated weighing instrument receives comprehensive documentation that traces its accuracy back to national mass standards, providing the measurement traceability that quality management systems, regulatory authorities, and commercial weighing requirements demand.
Why Mass Calibration is Essential for Your Operations
Product Quality and Formulation Accuracy
Manufacturing operations depend on precise mass measurements for ingredient proportioning, batch consistency, and product formulation. Whether mixing pharmaceuticals, blending chemicals, or preparing food products, accurate weighing ensures consistent product quality and prevents costly formulation errors that could affect product performance or safety.
Regulatory Compliance and Documentation
Industries from pharmaceuticals to food production operate under strict regulatory frameworks requiring traceable mass measurements. FDA regulations, cGMP requirements, ISO standards, and food safety regulations mandate that weighing equipment be properly calibrated and maintained. Comprehensive calibration records are essential for regulatory compliance and successful audits.
Commercial Accuracy and Fair Trade
When weighing determines product quantities for pricing, billing, or commercial transactions, accuracy directly affects profitability and legal compliance. Commercial scales used for trade must meet legal metrology requirements to ensure fair transactions and prevent disputes. Regular calibration protects both buyers and sellers in commercial weighing applications.
Inventory Control and Cost Management
Accurate inventory management depends on reliable weighing systems for receiving, storage, and shipping operations. Weighing errors can lead to inventory discrepancies, ordering mistakes, and hidden costs throughout supply chain operations. Calibrated scales ensure accurate inventory data and help optimize purchasing and logistics decisions.
Process Control and Efficiency
Manufacturing processes increasingly rely on automated weighing systems for process control, batching, and quality assurance. Inaccurate weighing can disrupt process control algorithms, reduce yields, and increase waste. Calibrated weighing systems ensure optimal process performance and consistent product output.
Safety and Environmental Compliance
Many operations involve weighing hazardous materials, waste products, or materials with environmental restrictions. Accurate weighing is essential for safe handling, regulatory reporting, and environmental compliance. Weighing errors in these applications can create safety hazards or environmental violations.

Why Choose QSI for Mass Calibration?
At Quality Surveillance, Inc. we combine the personalized service of a local provider with the resources and reliability of a national network.
Powered by Accredited Labs
As part of the Accredited Labs family, Quality Surveillance, Inc. combines local, personalized service with the resources and expertise of a national calibration network. This partnership ensures consistent quality, technical support, and the capabilities needed to handle your most challenging calibration requirements.
Personalized Customer Service
We believe in building long-term relationships with our customers. That's why we prioritize clear communication, consistency, and reliability. Our team takes time to understand your specific needs, applications, and challenges, so we can provide calibration solutions that support your operational goals and quality objectives.
ISO/IEC 17025 Accreditation
We operate under the rigorous ISO/IEC 17025 standard, which demonstrates our technical competence and quality management system. This internationally recognized accreditation means our calibration results are accurate, reliable, and globally accepted. Our technicians undergo continuous training in evolving technologies and techniques.
Comprehensive Documentation
We go beyond calibration certificates, providing you with the documentation and support your quality system needs. Our detailed reports include measurement data, uncertainty analysis, and recommendations for calibration intervals. We also maintain comprehensive records for easy certificate retrieval and audit support.
Flexible Service Options
We understand that every business has unique operational requirements. That's why when possible we offer on-site calibration services to reduce your downtime. For instruments requiring controlled environments or specialized equipment, our fully equipped laboratories provide optimal calibration conditions.
Fast Turnaround Times
Production schedules don't wait for calibration delays. We prioritize quick turnaround times without compromising quality, helping you maintain operational efficiency while meeting calibration requirements. Our streamlined processes and scheduling ensure your instruments return to service as quickly as possible.
Audit-Ready Mass Calibration in 3 Simple Steps
Submit Your Equipment List
Send us a list of the equipment you need calibrated, and we’ll provide a tailored quote with clear pricing—no hidden fees.
Schedule Your Calibration
Choose a convenient time for an in-lab or on-site equipment calibration. Our certified technicians ensure precision and compliance with ISO/IEC 17025 standards.
Stay Compliant & Audit-Ready
Receive detailed calibration reports and certification, giving you peace of mind for audits and operational excellence.