CLAS Certificate Number 2005-03

Company name Rio Tinto Alcan
Arvida Research and Development Centre (ARDC)
Company address Technologies Analytiques
BP 1250 1955 Boul. Mellon
Jonquière (Quebec) G7S 4K8
Contact François Lagacé
Telephone: 418-290-1573
Email: francois.lagace@riotinto.com
Clients served
  • Calibration services are provided within the Rio Tinto Alcan, ARDC group
Fields of calibration
  • Mass
Accreditation body
  • Standards Council of Canada (SCC)
ISO/IEC 17025
  • SCC file number: 15097
  • First issued
  • Issue 2.1e

This CLAS Certificate is published by the CLAS service of the National Research Council of Canada (NRC) in cooperation with the laboratory accreditation of the Canadian Association for Laboratory Accreditation (CALA) and the Standards Council of Canada (SCC). The accreditation body recognizes the capability of the named laboratory for being able to perform calibrations as per the listed Calibration and Measurement Capabilities with metrological traceability to the International System of Units (SI) or to standards acceptable to CLAS. See supplementary notes.

Mass

Measured Quantity & Range or Instrument Expanded
Measurement
Uncertainty
Type of Service Remarks
Balances
(Electronic, Non Automatic) With the following resolutions
Microbalance
0.1 μg and 1 μg 3.5 μg II

For the calibration of balances. The Calibration Measurement Capability (CMC) listed can be achieved only if the balance being calibrated is suitable for such a measurement.

The CMC is based upon the use of reference standards (weights) which meet the tolerance of ASTM-1 class.

Rio Tinto Alcan ARDC corrects for the known offset assigned to its reference standards (applied mass value) so that it can calculate uncertainties that are perhaps better than the tolerances of the standards used.

The CMC reflects the uncertainty contribution of the standards, the repeatability and readability of the best balance commercially available for the specific values calibrated by Rio Tinto Alcan ARDC.

All values are expressed in conventional mass, as defined by the Organisation internationale de métrologie légale (OIML): "The conventional value of the value of the result of weighing a body in air is equal to mass of a standard, of conventionally chosen density (8000 kg/m3), at a conventionally chosen temperature (20 °C), which balances this body at this reference temperature in air of a conventionally chosen density (1.2 kg/m3)."

Analytic balance
0.01 mg and 0.1 mg 0.02 mg II

For the calibration of balances. The Calibration Measurement Capability (CMC) listed can be achieved only if the balance being calibrated is suitable for such a measurement.

The CMC is based upon the use of reference standards (weights) which meet the tolerance of ASTM-1 class.

Rio Tinto Alcan ARDC corrects for the known offset assigned to its reference standards (applied mass value) so that it can calculate uncertainties that are perhaps better than the tolerances of the standards used.

The CMC reflects the uncertainty contribution of the standards, the repeatability and readability of the best balance commercially available for the specific values calibrated by Rio Tinto Alcan ARDC.

All values are expressed in conventional mass, as defined by the Organisation internationale de métrologie légale (OIML): "The conventional value of the value of the result of weighing a body in air is equal to mass of a standard, of conventionally chosen density (8000 kg/m3), at a conventionally chosen temperature (20 °C), which balances this body at this reference temperature in air of a conventionally chosen density (1.2 kg/m3)."

0.001 g, 0.01 g, 0.1 g and 1 g 0.002 g