ISO/IEC 17025 Accredited Pipette Calibration
Pipettes enable accurate liquid handling that determines the validity of research results, diagnostic accuracy, and pharmaceutical quality. Our national network of local calibration providers delivers metrology-based pipette calibration services, ensuring the precision and reliability your operations demand.
Our Pipette Calibration Services
Pipette accuracy directly impacts experimental reproducibility, dosing precision, and analytical reliability.
Routine preventive maintenance of a pipette's sealing system — including O-rings, pistons, and tip cones — is the most important factor in long-term accuracy. A well-maintained pipette should not drift significantly between calibrations or require frequent adjustment.
When seals degrade and maintenance is neglected, pipettes begin delivering inaccurate volumes, leading to invalid research data, failed experiments, incorrect diagnoses, regulatory violations, and compromised product quality that wastes time, resources, and scientific effort.
The Accredited Labs network offers complete pipette calibration services to keep your critical liquid handling instruments accurate.
Our Process
Pipette calibration is the systematic process of examining and adjusting pipettes to ensure they accurately deliver specified volumes by comparison to traceable measurement standards. This essential service uses gravimetric methodology — measuring dispensed liquid mass under controlled conditions — to verify pipette performance against manufacturer specifications across the instrument's volume range. Metrology-based pipette calibration follows strict guidelines established by the National Institute of Standards and Technology (NIST) and ISO 8655 standards, ensuring standardized methodology and traceable accuracy.
During pipette calibration, certified technicians perform multiple weighings at low and high volume settings to characterize pipette accuracy and precision. They document any performance deviations discovered and, when included in service packages, perform necessary adjustments, preventive maintenance, and repairs to restore pipettes to manufacturer specifications. The gravimetric method provides quantitative, statistically valid data that definitively demonstrates whether pipettes conform to specified tolerances or require corrective action.
Accredited Labs offers flexible pipette calibration services to meet your specific compliance and budget requirements — from essential preventive maintenance and accuracy adjustment, to full ISO/IEC 17025 accredited calibration with complete adherence to ISO 8655.
Pipette Brands and Models We Service
We work with all makes and models of pipettes regardless of manufacturer, providing comprehensive calibration for the complete spectrum of liquid handling instruments, including:
Major Manufacturers: Eppendorf, Rainin, Gilson, BrandTech, Sartorius, Hamilton, CAPP, Integra Biosciences, Biohit, Nichiryo, Labnet, Matrix, Socorex, Cole-Palmer, Drummond, Accupet, Oxford Lab Products, Jencons, Hirschmann, Heathrow, Falcon, and many others.
Pipette Types: Single-channel pipettes, multi-channel pipettes, electronic pipettes, manual pipettes, adjustable volume pipettes, fixed volume pipettes, and specialized liquid handling instruments across all volume ranges and configurations.
Pipette Calibration Specialists in Our Network: OnCal and Accutek are two dedicated pipette calibration providers within the Accredited Labs network, offering specialized expertise in liquid handling instrument calibration.
Industry and Application Use Cases
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Pharmaceuticals and Life Sciences: Pharmaceutical laboratories rely on accurate pipetting for analytical testing, quality control, and research applications. Our calibration services ensure analytical accuracy for pharmaceutical analysis and regulatory compliance.
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Research and Development: Research laboratories across industries use pipettes as a foundational liquid handling tool for materials research, product development, and scientific investigation. Our services support research accuracy, data integrity, and experimental reproducibility.
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Quality Control Laboratories: Independent testing labs and quality control facilities require calibrated liquid handling instruments for diverse testing services. Our calibration services support laboratory accreditation and quality management systems.
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Paints and Coatings Manufacturing: Our calibration services support accurate liquid measurement for paint and coating formulation and quality assurance.
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Printing and Graphic Arts: Our services ensure accurate liquid handling for print quality control applications.
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Automotive and Transportation: Our calibration services support automotive manufacturing and refinishing operations requiring precise liquid measurement.
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Plastics and Polymers: Our services ensure accurate liquid handling for plastic product manufacturing and quality control.
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Food and Beverage: Our services support food quality control and manufacturing operations requiring precise liquid measurement.
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Cosmetics and Personal Care: Our calibration services ensure product consistency and quality for cosmetic manufacturing.
FREE DOWNLOAD
The Complete Guide to Pipette Calibration Compliance
This free guide walks you through everything that matters: the standards governing pipette calibration, the compliance gaps auditors most commonly cite, and a step-by-step 30-day readiness sprint to get your lab prepared before any assessment.
Download it now and know exactly where you stand.
Find Pipette 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.
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Cal-Cert
Cal-Cert is committed to providing the highest level of calibrations and certification service to our customers.
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Cal-Labs
Cal-Labs has provided quality calibration in Southern California since 1977. We are A2LA accredited to ISO 17025.
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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.
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Cal Tec Process Management
The calibration specialists at CTPM have been providing precision calibration and quality assurance since 1987.
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Calser Calibrations
Since 1979, Calser Calibrations has delivered trusted, precision calibration services backed by a commitment to quality and reliability.
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CMG Sales, Inc.
CMG Sales, Inc. is a leading manufacturer sales representative and ISO 17025 accredited calibration laboratory providing services to manufacturers nationwide.
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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.
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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.
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Holts Precision, Inc.
For over 60 years Holts Precision, Inc. has performed calibrations & repairs on all major brands of gaging equipment.
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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.
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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.
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IPM, Inc.
Industrial Process Measurement, Inc. has been in the instrument supply, service and calibration business for over 30 years.
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J & J Calibration Service
J&J Calibration Service, an ISO-17025 accredited company, offers unmatched mobile calibration capabilities and laboratory calibration services.
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OCS Technologies
Founded in 1930, OCS Technologies is a trusted multi-discipline calibration service provider as well as leading product distributor.
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OnCal
With over 23 years of experience in pipette calibration in the Pacific Northwest, the OnCal Corporation guarantees seamless and dependable metrology services.
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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.
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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.
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Quality Control Services
Quality Control Services is an established, accredited calibration services and laboratory equipment company with over 40 years of experience.
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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.
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Scale Service & Supply
From laboratory balances to truck scales, Scale Service & Supply has been providing precision calibration for weighing systems since 1987.
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Servo Innovations
Servo Innovations, founded in 2005, has earned industry-wide trust for its accredited calibration, repair, and technical services.
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Tescom Calibration Services
Tescom Calibration Services has provided sales, repair, and calibration of telecom test equipment since 1982.
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Trident Calibration Labs
Serving the greater Phoenix area, Trident Calibration Labs has more than 100 years of combined calibration experience.
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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.
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Utah Scale Center
Utah Scale Center offers servicing and calibrating of industrial scales across the Rocky Mountain Region, with 70+ years of experience.
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Washington Calibration
Washington Calibration has been providing customers with quality gage repair services for all their inspection measuring instruments for more than 34 years.
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Frequently Asked Questions
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How do I know if my pipettes need calibration between scheduled intervals?
Several signs can indicate that a pipette may have drifted between scheduled calibrations, including inconsistent experimental results, visible physical damage such as a bent or worn tip cone, difficulty maintaining a seal, or unusual resistance during aspiration or dispensing. If any of these are observed, the pipette should be taken out of service and calibrated before further use — regardless of when it was last calibrated on schedule.
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What calibration standards and methods apply to liquid handling pipettes?
Pipette calibration is typically performed using the gravimetric method, in which dispensed volumes of purified water are weighed on a calibrated analytical balance and converted to volume using known density values. This approach aligns with ISO 8655, the primary international standard for piston-operated volumetric apparatus, which specifies acceptable tolerance limits and calibration procedures for a wide range of pipette types and volume ranges.
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Does pipette calibration need to account for altitude, temperature, or atmospheric pressure?
Yes — especially for high-accuracy applications. The gravimetric method used in pipette calibration involves converting mass to volume, which requires corrections for air density, water density, and evaporation — all of which are influenced by temperature, humidity, and atmospheric pressure. Accredited calibration laboratories account for these environmental factors during calibration, which is particularly important for laboratories at higher elevations or operating in non-standard conditions.
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Can pipettes be calibrated on-site in the laboratory, or do they need to go to a calibration facility?
Pipettes can be calibrated both in an accredited calibration facility and on-site in the laboratory setting. On-site calibration is convenient and avoids the disruption of sending instruments off-site, but environmental conditions — particularly temperature and humidity — must be controlled and recorded during the calibration. Accredited on-site pipette calibration services meet the same ISO/IEC 17025 standards as in-lab services.
