Mass Calibration & Weight Calibration


NVLAP-accredited Echelon II calibration of your mass reference standards and laboratory weights.

  • Calibration of mass reference standards and GMP laboratory weights
  • Traceable to the International System of Units (SI) through the National Institute of Standards and Technology (NIST) or other national metrology institutes
  • Accredited to ISO / IEC 17025 through the National Voluntary Laboratory Assistance Program (NVLAP)

Mail-In Service: Yes
On-Site Service: No


Choose Masy for Accurate Calibration

Ensuring Measurement Accuracy for your Critical Weights and Mass Instruments

Ensuring the accurate pre-production and post-production weights of components used in the manufacture of pharmaceutical and biotechnology products is critical to ensuring product success, efficacy, and safety. Accurate and precise measurement of mass supports the stability, controllability, and repeatability of your sensitive production processes.

Masy's Approach to Calibration

Masy BioServices’ Approach to Mass Calibration

Masy’s mass calibration service offers high-quality calibration uncertainties, traceable to the International System of Units (SI) through the National Institute of Standards and Technology (NIST) or other national metrology institutes.

Mail-in calibrations are performed in our 650ft2 Class 10,000 environmentally-controlled mass metrology laboratory, featuring a seismically-isolated mass comparator platform and the highest-quality calibration standards, allowing us to offer minimal measurement uncertainty for your sensitive metrology standards and laboratory instruments.

Masy’s metrology laboratory is meticulously maintained at 21-23°C with 40-45% relative humidity, facilitating repeatable and accurate calibration.

Wide Range of Calibration Capabilities

The Right Range for your Requirements

Our weight calibration range includes 1mg to 303kg, in accordance with OIML R-111 and ASTM E617

Comprehensive Scope of Equipment Serviced

Comprehensive Scope of Mass and Weight Calibration

Weight & Mass Types
  • Commercial Weights
    • NIST Class F
    • ASTM Class 3, 4, 5, 6, and 7
    • OIML Class M1, M2, and M3
  • High-Precision Weights
    • ASTM Class 1 and 2
    • OIML Class F1 and F2
  • Standard Weights
    • OIML Class E2
Weight & Mass Manufacturers
  • Denver Instruments
  • Hafner
  • Mettler Toledo
  • Ohaus
  • Rice Lake
  • Sartorius
  • Troemner
List is representative but not completely inclusive; contact us with your specific make & model for a detailed quote.


Rigorous Quality Reviews

Rigorous Quality Reviews for Calibration Confidence

Masy BioServices provides calibration services that meet GMP requirements. Our reviewed and verified calibration documentation provides the critical information you need to support the accuracy requirements of your standards and instruments. Masy’s calibration certificates include both "as found" and "as left" data.


Fast Calibration Turnaround Time

Fast Turnaround Time Keeps your Operations On-Schedule

Our normal turn-around times for weights is 2 weeks.

Contact Masy for Calibration

Choose Masy BioServices for your Mass Calibration Needs

When you choose Masy for your mass reference standard and laboratory weight calibration needs, you can enjoy the confidence that comes with knowing that these critical instruments are calibrated with unparalleled accuracy, ensuring precise mass measurement in your own laboratory and production environments.

Contact Masy BioServices today for your mass calibration needs.

Masy BioServices is one of a select number of metrology laboratories in North America that meets the rigorous qualifications for NVLAP accreditation to ISO 17025:2005.
View our NVLAP Accreditation

Download Now!
Download the Masy Calibration brochure to see all our NVLAP-accredited laboratory capabilities.
Learn More

HÄFNER Standard Weights
Masy BioServices is the exclusive North American distributor of high-quality HÄFNER weight standards and laboratory weights.
Learn More

Related Products & Services