ISO/IEC 17025 Accredited Humidity Calibration
Accurate humidity measurement is essential to product quality, environmental control, and process reliability. Our national network of local calibration providers delivers precise results to support compliance, prevent product degradation, and reduce costly operational risks.
Our Humidity Calibration Services
Humidity measurement plays a vital role across industries such as pharmaceuticals, electronics manufacturing, food processing, environmental monitoring, and materials testing.
When humidity instruments drift out of specification, the consequences can be significant—process failures, contamination issues, product spoilage, regulatory violations, and increased operational costs. The Accredited Labs network provides comprehensive humidity calibration services to keep your instruments performing within their required accuracy ranges.
Our Process
Humidity calibration involves verifying and adjusting instruments that measure relative humidity, absolute humidity, dew point, and moisture content across defined operating ranges. Each device is compared to certified reference standards with known, traceable humidity values to identify any deviations from its intended performance.
Skilled technicians use precision humidity generators and calibrated reference instruments to evaluate performance across varying environmental conditions and the instrument’s full measurement range. They document all variations and may make the adjustments required to restore accuracy. If an instrument cannot be restored to the required accuracy range, you receive detailed reporting with the data needed for maintenance planning, uncertainty calculations, or informed replacement decisions.
All humidity calibrations follow internationally recognized standards and industry best practices that promote consistency, reliability, and complete measurement traceability. Each instrument is returned with documentation linking its accuracy to national humidity measurement standards—supporting environmental regulations, quality management systems, and process control requirements.
Types of Humidity Measuring Instruments We Calibrate
Our comprehensive humidity calibration services cover the complete spectrum of moisture measurement instruments used across industries:
- Digital Humidity Transmitters: Electronic instruments that provide precise humidity readings with analog or digital outputs for process control and monitoring systems. These instruments require calibration of sensors, signal processing electronics, and output characteristics to ensure accurate humidity measurement and reliable system integration.
- Portable Humidity Meters: Handheld instruments used for spot measurements, facility surveys, and field applications that require calibration across their measurement range and various environmental conditions. These versatile instruments support quality control, environmental monitoring, and maintenance applications with portable convenience.
- Hygrometers and Psychrometers: Traditional humidity measurement instruments including wet-bulb/dry-bulb psychrometers and mechanical hygrometers that require specialized calibration procedures accounting for their measurement principles and environmental sensitivities.
- Data Loggers with Humidity Sensors: Automated monitoring systems that record humidity measurements over time for environmental monitoring, validation studies, and compliance documentation. Calibration ensures accurate data collection and timing precision for extended monitoring applications.
- Dew Point Meters: Specialized instruments that measure dew point temperature for applications requiring absolute humidity determination, compressed air quality monitoring, and process control in industrial applications where dew point is the critical measurement parameter.
- Moisture Analyzers: Laboratory instruments that determine moisture content in materials, products, and samples using various measurement techniques. These instruments require specialized calibration procedures that address both the humidity measurement and sample handling characteristics.
- Environmental Chamber Controllers: Humidity control systems used in environmental chambers, stability testing equipment, and controlled atmosphere storage that require calibration of both measurement and control functions for precise environmental management.
- HVAC Humidity Sensors: Building automation sensors used for climate control, indoor air quality monitoring, and energy management that require calibration for accurate environmental control and energy-efficient operation.
- Cleanroom Monitoring Systems: Specialized humidity monitoring equipment designed for pharmaceutical cleanrooms, electronics manufacturing, and sterile environments that require calibration procedures compatible with cleanroom protocols and contamination control.
- Industrial Process Humidity Monitors: Robust instruments designed for manufacturing environments including paper mills, textile plants, and chemical processing facilities that require calibration under challenging industrial conditions.
Find Humidity Calibration Services
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Accutek Lab
Accutek Lab has been providing reliable and cost-effective pipette calibration services across the United States since 1996.
Calibration ServicesPipette Calibration -
Aldinger
Since 1972, Aldinger has been providing top-quality calibration services for test and measurement equipment in Texas and beyond.
Calibration ServicesDimensional Calibration Flow Calibration Force Calibration Grain Moisture Tester Calibration Mass Calibration +6 more -
Cal-Cert
Cal-Cert is committed to providing the highest level of calibrations and certification service to our customers.
Calibration ServicesDimensional Calibration Construction Materials Testing Equipment Calibration Electrical Calibration Force Calibration Humidity Calibration +5 more -
Cal-Labs
Cal-Labs has provided quality calibration in Southern California since 1977. We are A2LA accredited to ISO 17025.
Calibration ServicesDimensional Calibration -
Calibration Services Inc.
Calibration Services, Inc. (CSI) is an on-site and in-house calibration firm specializing in calibration and service of mechanical testing devices.
Calibration ServicesForce Calibration Torque Calibration Mass Calibration Dimensional Calibration Pressure Calibration +3 more -
Cal Tec Process Management
The calibration specialists at CTPM have been providing precision calibration and quality assurance since 1987.
Calibration ServicesForce Calibration Torque Calibration Mass Calibration Dimensional Calibration Pressure Calibration +2 more -
Calser Calibrations
Since 1979, Calser Calibrations has delivered trusted, precision calibration services backed by a commitment to quality and reliability.
Calibration ServicesConstruction Materials Testing Equipment Calibration Dimensional Calibration Force Calibration Mass Calibration Pressure Calibration +3 more -
CMG Sales, Inc.
CMG Sales, Inc. is a leading manufacturer sales representative and ISO 17025 accredited calibration laboratory providing services to manufacturers nationwide.
Calibration ServicesCoating Thickness Calibration Color Calibration -
Color Calibration Group
Color Calibration Group has been providing professional calibration services for all your color, light, and viscosity calibration needs for over 25 years.
Calibration ServicesCoating Thickness Calibration Color Calibration -
ETI Precision
ETI has been a leader in the calibration, repair, and sale of test and measurement equipment since 1994, and covers all 50 states.
Calibration ServicesElectrical Calibration Force Calibration Torque Calibration Dimensional Calibration Pressure Calibration +2 more -
Holts Precision, Inc.
For over 60 years Holts Precision, Inc. has performed calibrations & repairs on all major brands of gaging equipment.
Calibration ServicesDimensional Calibration Electrical Calibration Force Calibration Mass Calibration Pressure Calibration +2 more -
Huston-DePue
Established in 1960, HDCL is staffed by experienced professionals who understand the critical role accurate measurement plays in quality control and regulatory compliance.
Calibration ServicesFlow Calibration Force Calibration Torque Calibration Mass Calibration Dimensional Calibration +3 more -
Instrument Technologies, Inc.
For over three decades, Instrument Technologies, Inc. (ITI) has been a trusted partner for regulated industries seeking precision, compliance, and operational reliability.
Calibration ServicesFlow Calibration Mass Calibration Dimensional Calibration Pressure Calibration Time Calibration +1 more -
IPM, Inc.
Industrial Process Measurement, Inc. has been in the instrument supply, service and calibration business for over 30 years.
Calibration ServicesDimensional Calibration Electrical Calibration Flow Calibration Force Calibration Humidity Calibration +6 more -
J & J Calibration Service
J&J Calibration Service, an ISO-17025 accredited company, offers unmatched mobile calibration capabilities and laboratory calibration services.
Calibration ServicesDimensional Calibration Electrical Calibration Force Calibration Pressure Calibration Temperature Calibration +1 more -
OCS Technologies
Founded in 1930, OCS Technologies is a trusted multi-discipline calibration service provider as well as leading product distributor.
Calibration ServicesForce Calibration Torque Calibration Mass Calibration Dimensional Calibration Pressure Calibration +3 more -
OnCal
With over 23 years of experience in pipette calibration in the Pacific Northwest, the OnCal Corporation guarantees seamless and dependable metrology services.
Calibration ServicesPipette Calibration -
Polymer Testing Instruments
Since 1996 Polymer Testing Instruments Inc. has provided high quality service and calibration of equipment for the rubber, plastics, and energy industries.
Calibration ServicesForce Calibration Torque Calibration Dimensional Calibration Pressure Calibration Temperature Calibration +1 more -
Precision Calibration Systems
PCS is a full-service ISO 17025 Accredited calibration laboratory, founded with the goal of providing reliable and accurate instrument calibration service.
Calibration ServicesFlow Calibration Force Calibration Torque Calibration Mass Calibration Dimensional Calibration +4 more -
Quality Control Services
Quality Control Services is an established, accredited calibration services and laboratory equipment company with over 40 years of experience.
Calibration ServicesForce Calibration Mass Calibration Pipette Calibration Temperature Calibration -
Quality Surveillance, Inc.
QSI has been providing Los Angeles, Ventura, Santa Barbara and Santa Clarita Counties with reliable and cost effective metrology services since 1992.
Calibration ServicesDimensional Calibration Force Calibration Mass Calibration Pressure Calibration Temperature Calibration +3 more -
Scale Service & Supply
From laboratory balances to truck scales, Scale Service & Supply has been providing precision calibration for weighing systems since 1987.
Calibration ServicesScale Calibration Mass Calibration -
Servo Innovations
Servo Innovations, founded in 2005, has earned industry-wide trust for its accredited calibration, repair, and technical services.
Calibration ServicesFlow Calibration Force Calibration Torque Calibration Dimensional Calibration Pressure Calibration +2 more -
Tescom Calibration Services
Tescom Calibration Services has provided sales, repair, and calibration of telecom test equipment since 1982.
Calibration ServicesFlow Calibration Force Calibration Torque Calibration Mass Calibration Dimensional Calibration +4 more -
Trident Calibration Labs
Serving the greater Phoenix area, Trident Calibration Labs has more than 100 years of combined calibration experience.
Calibration ServicesElectrical Calibration RF & Microwave Calibration Dimensional Calibration Force Calibration Mass Calibration +6 more -
Tru Cal International
Serving as an asset to countless businesses in a variety of industries, Tru Cal International has specialized in test equipment calibration since 1992.
Calibration ServicesElectrical Calibration Dimensional Calibration Force Calibration Pressure Calibration RF & Microwave Calibration +3 more -
Utah Scale Center
Utah Scale Center offers servicing and calibrating of industrial scales across the Rocky Mountain Region, with 70+ years of experience.
Calibration ServicesScale Calibration -
Washington Calibration
Washington Calibration has been providing customers with quality gage repair services for all their inspection measuring instruments for more than 34 years.
Calibration ServicesDimensional Calibration Force Calibration Mass Calibration Pressure Calibration Temperature Calibration +1 more
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Audit-Ready 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 a mobile 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.
Frequently Asked Questions
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What types of instruments are included in humidity calibration services?
Humidity calibration services typically cover instruments such as hygrometers, relative humidity probes and transmitters, psychrometers, dew point meters, and data loggers equipped with humidity sensors. Both portable handheld instruments and fixed-installation sensors used in environmental monitoring systems can generally be calibrated.
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How does humidity measurement accuracy affect pharmaceutical and cleanroom environments?
In pharmaceutical manufacturing, humidity control is directly tied to product stability, microbial contamination risk, and regulatory compliance. Many pharmaceutical and biotech facilities must operate within tightly controlled humidity ranges as specified in their validated processes. Inaccurate humidity readings can lead to out-of-spec environmental conditions that compromise product quality or trigger regulatory findings during an FDA or EMA inspection.
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Why do humidity sensors drift and how does calibration address it?
Humidity sensors — particularly capacitive and resistive sensor types — are susceptible to drift due to contamination from airborne chemicals, particulates, or prolonged exposure to extreme humidity levels. Calibration compares the sensor output against a traceable reference standard and documents any deviation, allowing adjustments to be made or correction factors to be applied so readings remain accurate.
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Can humidity calibration be performed in the field, or does it require a lab environment?
Humidity calibration can be performed both in controlled laboratory environments and on-site, depending on the instrument and the required accuracy level. Field calibration is practical for many applications and can minimize downtime, particularly for sensors integrated into building systems or production environments. Lab calibration typically offers more controlled conditions, which is important for high-accuracy or regulated applications.
