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Calibration and Certification Services

Confidence in Calibration for your Gas Flow Devices

Gas flow devices, including sample pump flowmeters, are only as accurate as their calibration. SKC CAL Service performs and documents calibration for your gas flow devices to maintain the integrity of your air monitoring programs and to stay in compliance with quality management systems. View SKC CAL Service Brochure.

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      Accreditation #88818


worker calibrating pump

Why choose SKC Calibration Lab?


SKC Calibration Request Form

SKC Calibration Fees

Standard NIST Traceable Calibration is included in both levels of service and comprises device inspection, 5-point* calibration, and NIST-traceable certificate. Pricing includes standard turnaround time of 7 to 10 business days. Additional fees will be added for extra calibration points and any custom requests. SKC will contact you for authorization.



Defender 510
Defender 520
Defender 530
(DCL -L, -M, and -MH models up to 10 L/min)
Accuflow, DigiCal, UltraFlo, Gilibrator, or other
Mass Flowmeter
Soap Film Flowmeter
Dual-ball Rotameter *
Field Rotameter

* Dual-ball Rotameters are calibrated at 12 flow points

Calibration of volumetric flow rate only

For equipment not listed above, contact SKC for authorization and approximate calibration costs before shipping.

SKC Calibration Request Form
Please fill out the form below and submit
Shipping and Contact information for return shipment of repaired items. DO NOT SHIP THE PRODUCT YET. SKC will respond with an RA number.,
items marked with a * are required :

Gas Flow Device (required)
Unit indicated below is functional
Unit indicated below is Non-functional

Defender (510L, 520L, 530L, 510M, 520M, 530M)
Mass Flowmeter (to 10 L/min)
Dual-ball Rotameter
Soap Film Flowmeter
Field Rotameter
Other electronic flowmeters (DigiCal, UltraFlo, Gilibrator)
DCL-L, DCL-M, DCL-MH (to 10 L/min)

Certification Level Specified (required): (required)
NIST Traceable Calibration: This is the standard calibration procedure for flowmeters used in air sampling and similar procedures.
ISO/IEC 17025:2005 Accredited: This procedure offers NIST Traceable Calibration as above with the addition of uncertainty values for measured parameters during the test at each reported result. (Only gas flow rate calibration for Defender 520/530 models.)
Custom Service: This option offers a customizable service and/or certificate to meet your specific needs.

Custom service required (for custom service only):

SKC will contact you with a quote for your custom service before proceeding.

Flows to be Calibrated (optional):
Calibration points performed are:
1, 2, 3, 4, and 5 L/min for high flow
750 ml/min, 1, 2, 4, and 5 L/min for chek-mate
100, 200, 300, 400, and 500 ml/min for low flow.
List any additional points required.

SKC will contact you with pricing for additional points before proceeding.

Frequency of Calibration Specified by User (required):
(e.g., Quarterly, Annual)

This information will be noted on documentation and reported on the calibration label.

For Rotameter Calibrations Only (optional):
Rotameter readings will be corrected to standard temperature and pressure.
If other than standard temperature and pressure is desired by the user, please indicate:

Standardization Temperature (if other than 20 C)

Standardization Pressure (if other than 1013.25 mbar)

Calibration Service Time (required):
Standard 7 to 10 business days
Expedited service available. SKC will contact you with additional fee information

Required anti-spam question:

Click submit button to send
DO NOT SHIP THE PRODUCT YET! You will be contacted with an RMA.