Standards calibration — Thermometry

Thermometer standards used by Measurement Canada inspectors and authorized service providers are calibrated for use in the field.


Direct read against reference standards probe in liquid circulating bath providing a uniform temperature distribution of:

  • Direct-read digital thermometers with one or more probes, and a temperature range within -40 °C to +125 °C
  • High accuracy resistance thermometers and thermistors with immersion type probes which use Temperature-Resistance correlation (e.g. Callendar-Van Dusen or Steinhart-Hart equations). Resistance readout and temperature probes are calibrated as a system over the range of -40 °C to +125 °C.

Measurement conditions:

  • Temperature: 23 °C ± 5 °C
  • Humidity: 10-80 % relative humidity, non-condensing
  • Pressure: Ambient pressure

Calibration location:

  • All devices are calibrated by Measurement Canada's Approval and Calibration Services Laboratory (ACSL) in Ottawa.


  • N/A for devices used under the application of the Weights and Measures Act.
  • 150$ for the first 10 measurement points, plus 15$ for each extra point for device used under the application of Electricity and Gas Inspection Act.

Only standards used by Measurement Canada inspectors and authorized service providers are calibrated by Measurement Canada's laboratories. Standards and apparatus must be authorized and registered with Measurement Canada to qualify for this service.

Request calibration services

To request calibration services, complete the Calibration Services Request (CSR) form. A form must be completed for each standard.

Issues have been reported with the use of Chrome and Mozilla Firefox. If you are using these browsers, the form can still be downloaded by saving it to your computer.

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You may wish to notify the volume laboratory of when it can expect to receive your standard(s) in order to help expedite the calibration process.

Shipping requirements

Applicants are responsible for shipping arrangements and charges. Devices are to be sent to:

Measurement Canada, ACSL
Standards Building
151 Tunney's Pasture Driveway
Ottawa, Ontario, K1Y 1G9

A completed copy of the Calibration services request (CSR) form must accompany each device shipped. Ensure that an active/valid shipping account number for return shipping is identified on the form.


Packages not meeting these requirements listed below may not be accepted.

  • Standards must be in a reusable container.
  • Containers must not be sealed with nails. Crates or boxes with a hinged door or cover fastened with screws are acceptable.
  • Provisions for re-packaging and the return of standards must be made before delivery. See Return of standards for more details.

International shipments and importing requirements

It is your responsibility to ensure that:

  • Your shipment complies with all customs and importation requirements.
  • You have pre-paid all applicable customs and importation fees and charges.
  • All brokerage, import, transportation, insurance and any other incidental fees and forms must be prepaid and accompany the shipment.

Consult the Canada Border Services Agency to ensure you are aware of all customs and importation requirements and fees and charges that apply to your shipment.

Return of standards

Return of standards — International

Measurement Canada will provide you with the weight and dimensions of the package. It is advisable to wait for this information prior to making further arrangements for the return shipping of your standards.

All paperwork (waybill, commercial invoice and any other related forms) must be submitted and faxed to the attention of Shipping and Receiving at 613-952-8170.

Any cost associated with the re-packaging of a device is the customer's responsibility.

Return of standards — National

Arrangements for the return of your standards are your responsibility. However, Shipping and Receiving can also make the arrangements provided that an account number and waybill are provided in advance.

Any cost associated with the re-packaging of a device is the customer's responsibility.

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