CLAS requirements for applications for CLAS certification and SCC accreditation for calibration laboratories

CLAS Requirements Document 1, May 2018

1.0 Introduction

Calibration laboratories wanting to become accredited must meet the requirements of published CLAS requirements documents and the general requirements outlined in the latest edition of the international standard ISO/IEC 17025 General requirements for the competence of testing and calibration laboratories. Compliance with the requirements is verified by the Calibration Laboratory Assessment Service (CLAS) of the National Research Council of Canada (NRC) as part of the accreditation process of the Standards Council of Canada (SCC). Laboratories also must demonstrate competence to perform the specific measurements for which they wish to become accredited. Applicants must agree to comply with published CLAS requirements and with the SCC accreditation requirements.

Applicants should review CLAS Requirements Documents, the SCC accreditation requirements and the requirements of ISO/IEC 17025. CLAS Technical Advisors are available to assist applicants in understanding the program requirements before an application is submitted.

2.0 Application package

2.1 A new application for CLAS Certification and SCC Accreditation shall include:

  • the signed application form – New Applicants (Appendix A) (PDF, 558 KB);
  • the completed Requested scope of CLAS certification and SCC accreditation (Appendix D) (PDF, 162 KB);

Note: please ensure sufficient technical information is provided in the requested scope to identify the types of instruments and/or standards being calibrated and the types of standards used; see example in Appendix E.

  • the completed CLAS 1510 Assessment guide;
  • the laboratory management system documentation;

2.2 Scope Extension requests shall include:

  • the application form – Scope Extensions (Appendix B) (PDF, 548 KB);
  • the Requested scope of CLAS certification and SCC accreditation detail the new parameters desired (Appendix D) (PDF, 162 KB);

Note: please ensure sufficient technical information is provided in the requested scope to identify the types of instruments and/or standards being calibrated and the types of standards used; see example in Appendix E.

2.3 Group Accreditation applications shall include:

  • the signed application form – New Applicants (Appendix A) (PDF, 558 KB);
  • the signed application form – Group accreditation (Appendix C) (PDF, 121 KB);
  • the completed Requested scope of CLAS certification and SCC accreditation per location (Appendix D) (PDF, 162 KB);

Note: please ensure sufficient technical information is provided in the requested scope to identify the types of instruments and/or standards being calibrated and the types of standards used; see example in Appendix E.

  • the completed CLAS 1510 Assessment guide;
  • the laboratory management system documentation

3.0 Additional information

To facilitate the technical assessment, a laboratory must always be prepared to provide the following supporting technical information (if applicable):
calibration procedures,
examples of completed calibration certificates (CLAS requirements document 6)
evidence of traceability (CLAS requirements document 9),
measurement uncertainty budget(s)
control of measurement standards (CLAS requirements document 3),
available records of proficiency testing (CLAS requirements document 7).

All information provided to CLAS and SCC is confidential.

The information provided in this application has several purposes:

  • to ensure that an applicant has examined each of the requirements and is reasonably confident of compliance with each one;
  • to enable CLAS staff to detect and advise the applicant of any potential nonconformities, and thus provide better assurance of a successful on-site assessment;
  • to provide the on-site assessment team with the information needed to carry out an effective assessment; and
  • to provide the basis for confirming consistency between the documented and assessed capability of a laboratory.

If the applicant laboratory is part of a company or is a separate unit within an organization, the term "laboratory", refers only to the calibration laboratory for which accreditation is sought and not to the parent organization or other affiliations.

Appendix A: Application form
CLAS certification and SCC accreditation
new applicants

Appendix A: Application form CLAS certification and SCC accreditation new applicants (PDF, 558 KB)

Laboratory Legal Name: 
Postal / Street Address: 
City and Province or State: 
Postal/Zip Code and Country: 

hereby applies for CLAS Certification and SCC Accreditation as a calibration laboratory for the scope of measurement capabilities outlined in the attached Requested scope of CLAS certification and SCC accreditation.

With this application, the applicant agrees to the following items by initialling the boxes:

I agree to the use of fax technology if required for assessment communication.

Client fax telephone number: 

I agree to the use of email if required for assessment communication.

Client email address: 

This laboratory provides calibration services to all interested parties.

This laboratory requires traceability of its Primary Reference Standard of mass to reference standard MR-1 and evaluation against Measurement Canada Recognition of Calibration Results from CLAS (Calibration Laboratory Assessment Service) Type I Laboratories Program Conditions and Requirements (MC-RC-01).

N.b. when this item is selected, a copy of this application must be submitted by the applicant to Measurement Canada, c/o Innovative Services Directorate, 151 Tunney’s Pasture Driveway, Ottawa ON K1A 0C9.

Laboratory contact person

Name: 
Title: 
Telephone: 

Once CLAS Certification and SCC Accreditation is granted, the applicant agrees to the following obligation:

  • to comply with the requirements and conditions contained in the latest edition of ISO/IEC 17025, the CLAS requirements documents, and in the latest editions of the SCC accreditation requirements.
  • to comply with, if applied for, the requirements and conditions contained in the latest edition of the Measurement Canada Recognition of Calibration Results from CLAS (Calibration Laboratory Assessment Service) Type I Laboratories Program Conditions and Requirements (MC-RC-01) from the recognition of calibration results, by Measurement Canada, to certify and designate as a local standard any standard, as per the scope of the program, that has been calibrated in relation to a reference standard as accurate within the prescribed tolerances;
  • to pay the required fees to CLAS;
  • to cooperate with CLAS and SCC in the scheduling of assessment visits. (this applies to all premises where calibrations take place);
  • to provide access to information, documents and records as necessary for the assessment and maintenance of the accreditation;
  • to cooperate with CLAS and SCC in maintaining the integrity of the accreditation program;
  • to claim accreditation only with respect to the scope for which it has been granted
  • to notify CLAS, without delay, of any significant changes relevant to its accreditation, in any aspect of its status or operation relating to
    1. its legal, commercial, ownership or organizational status,
    2. the organization, top management and key personnel,
    3. main policies,
    4. resources and premises,
    5. scope of accreditation, and
    6. matters that may affect the ability of the CAB to fulfil requirements for accreditation; and
  • that accreditation may be withdrawn, on failure of a laboratory to comply with the foregoing, subject only to the rights of appeal set out in the SCC accreditation requirements.

Authorized representative of applicant laboratory

Signature: 
Name: 
Title: 
Date: 
Telephone: 

This document must be accompanied by: the completed Requested Scope of CLAS Certification and SCC Accreditation (Appendix D), the completed CLAS 1510 Assessment Guide and the laboratory management system documentation.

Appendix B: Application form
CLAS certification and SCC accreditation
scope extensions

Appendix B: Application form CLAS certification and SCC accreditation scope extensions (PDF, 548 KB)

Laboratory Legal Name: 
CLAS file number: 
CLAS Certificate number: 

hereby applies for an extension of the scope of measurement capabilities outlined in the attached Requested Scope of CLAS Certification and SCC Accreditation.

This laboratory requires traceability of its Primary Reference Standard of mass to reference standard MR-1 and evaluation against Measurement Canada Recognition of Calibration Results from CLAS (Calibration Laboratory Assessment Service) Type I Laboratories Program Conditions and Requirements (MC-RC-01).

N.b. when this item is selected, a copy of this application must be submitted by the applicant to Measurement Canada, c/o Innovative Services Directorate, 151 Tunney’s Pasture Driveway, Ottawa ON K1A 0C9.

Authorized representative of applicant laboratory

Signature: 
Name: 
Title: 
Date: 
Telephone: 

Laboratory contact person (if different than above)

Name: 
Title: 
Telephone: 

This document must be accompanied by: the completed Requested Scope of CLAS Certification and SCC Accreditation (Appendix D), and associated procedures, as required.

Appendix C: Application form
CLAS certification and SCC accreditation
group accreditation

Appendix C: Application form CLAS certification and SCC accreditation group accreditation (PDF, 121 KB)

For details, please refer to CLAS Requirements Document 10.

Laboratory Legal Name: 
Headquarters: 
Postal / Street Address: 
City and Province or State: 
Postal/Zip Code and Country: 

hereby applies for CLAS Certification and SCC Accreditation as a group for the locations and the scopes of measurement capabilities outlined in the attached Requested scope of CLAS certification and SCC accreditation per location.

Central contact person - Technical operations

Name: 
Title: 
Telephone: 
Fax: 
Email: 

Central contact person – Management system

Name: 
Title: 
Telephone: 
Fax: 
Email: 

Central contact person - Billing

Name: 
Title: 
Telephone: 
Fax: 
Email: 
Locations:
Identification/Address Telephone Contact/Title

Authorized Representative of Group – Top Management

Signature: 
Name: 
Title: 
Date: 
Telephone: 

This document must be accompanied by: the completed Requested Scope of CLAS Certification and SCC Accreditation (Appendix D) per location, the completed CLAS 1510 Assessment Guide, and the laboratory management system documentation.

Appendix D: Requested Scope of CLAS Certification and SCC Accreditation

Appendix D: Requested Scope of CLAS Certification and SCC Accreditation (PDF, 162 KB)

Laboratory Identification: 
Quantity Measured or Type of Standard or Type of Equipment Calibrated Value or Range of Values Calibration Measurement CapabilityAppendix D Table 1 note 1 Expressed as Expanded Uncertainty Location of Service (laboratory, on-site or mobile) Procedure and/or Measurement Technique used Standard(s) and/or Equipment Providing Traceability

Table Notes

Note 1

For more information on Calibration and Measurement Capability see International Laboratory Accreditation Cooperation (ILAC) document P14, ILAC Policy for Uncertainty in Calibration, available at www.ilac.org.

Return to Appendix D table 1 note 1 referrer

Appendix E: Sample requested scope of CLAS certification and SCC accreditation

Quantity measured or type of standard or type of equipment calibrated Value or range of values Calibration measurement capabilityAppendix E Table 1 note 1 expressed as expanded uncertainty Location of service (laboratory, on-site or mobile) Procedure and/or measurement technique used standard(s) and/or equipment providing traceability
Spectrophotometers 0.1% to 100% spectral transmittance at decade wavelengths from 200 nm to 1100 nm ± 4% of reading On-site AAA spectral transmittance filter kit calibrated every 3 years by NIST and compared in-house against check standards at least monthly.
Luminance meters 0.01 cd/m2 to 299,000 cd/m2 ± 5% of reading for CIE Source A Laboratory facility CIE Source A 200 W luminous intensity standard and Ba2SO4 reflectance standard on custom optical bench; all 3 are calibrated by NRC, either directly or through suitable transfer standards. Lamp current is measured using a AAA digital voltmeter across a BBB current shunt, both of which are calibrated every 2 years by LLL (CLAS cert. No. nnn).
Voltage, dc 10 V 2.0 ppm for calibration of solid state reference standards Lab Bank of CCC voltage standards, one of which is calibrated annually by AAA (CLAS cert. No. nnn). The 4 voltage standards are inter-compared at least monthly using a DDD digital multimeter calibrated annually by AAA (NVLAP Lab Code BBB)
Current ac 100 μA to 1 A; 45 Hz to 100 Hz 0.09% to 0.12% Lab AAA multifunction calibrator monitored with a BBB digital multimeter that is calibrated annually by XXX (A2LA accreditation no. nn).
Current ac 1 A to 100 A; 45 Hz to 100 Hz 0.04% to 0.08% Lab AAA digital multimeter that is calibrated annually by XXX (NVLAP Lab Code nnn) and BBB current shunts calibrated annually by NIST.
Frequency 1 MHz to 10 MHz ± 1 part in 108 Lab XXX frequency counter calibrated annually by AAA (NATA Accreditation No. nnn)
Frequency 5 MHz and 10 MHz ± 1 part in 1011 for calibration of suitably stable oscillators Lab AAA disciplined GPS receiver that is continually monitored using an internally-characterised BBB phase comparator and a CCC Rubidium oscillator that is calibrated at least every 2 years by intercomparison with NRC
Time interval 5 s to 24 h ± 0.2 s On-site and Lab XXX manually-operated digital timer calibrated remotely by measurement of time signal distributed by NRC by telephone.
Rotational speed 1 rpm to 75,000 rpm ± 1 rpm On-site AAA optical tachometer calibrated annually by NRC.
Liquid in glass thermometer -20 °C to +70 °°C ± 0.5 °C Lab Stirred, characterised, water and oil baths and XXX digital thermometer calibrated annually by YYY (CLAS cert. No. nnn).
Temperature indicators for Type K thermocouples 0 °C to 1000 °C ± 0.3 °C to 1.1 °C by electrical simulation On-site and mobile AAA multifunction calibrator calibrated annually by BBB (JAB accreditation no. nnn). The following widely reviewed and authoritative publication is used for the specification of typical TC responsivity: CCC.
Gauge block, length: steel, rectangular and square Metric, 125 to 500 mm ± ( 0.068 + 0.0011L ) μm
(Note: L in 'millimetre')
Lab
Pressure, indicators and gauges: (gauge pressure) 10 to 800 psi 0.08% of reading or
0.04 psi whichever greater
Lab and on-site

Table Notes

Note 1

CMCs should be expressed at a level of confidence of approximately 95%

Return to Appendix E table 1 note 1 referrer

Appendix F: Calibration measurement capability

The "calibration measurement capability" is the smallest uncertainty of measurement that a laboratory can achieve within its scope of accreditation, when performing more or less routine calibrations of nearly ideal measurement standards. These ideal measurement standards are intended to define, realize, conserve or reproduce a unit of that quantity, or one or more of its values, or when performing more or less routine calibrations of nearly ideal measuring instruments.

'More or less routine calibrations' means that a laboratory shall be able to achieve the stated capability in the normal work that it performs under its accreditation. There are instances when a laboratory is able to achieve better results through extensive investigations and additional precautions. However, these cases are not covered by the definition of calibration measurement capability, unless it is the stated policy of a laboratory to perform such scientific investigations. If this is the case they become the 'more or less routine' type calibrations of a laboratory. Note: To further clarify the definition of a "nearly ideal" device, CLAS requires that the device is one that a laboratory is equipped to calibrate. In other words, the calibration measurement capability refers to a laboratory's uncertainty in calibrating the best available device that it can measure using the best techniques that it normally uses.

Inclusion of the qualifier 'nearly ideal' in the above definition means that calibration measurement capability should not be dependent on the characteristics of the device to be calibrated. Inherent in the concept of being nearly ideal is that there should be no significant contribution to the uncertainty of measurement attributable to physical effects that can be ascribed to imperfections of the device to be calibrated. However if it is established that even the most 'ideal' available device contributes to the uncertainty of measurement, this contribution shall be included in the determination of the calibration measurement capability and a statement should be made that the calibration measurement capability refers to the calibration of that type of device.

The definition of calibration measurement capability implies that within its accreditation a laboratory is not entitled to claim a smaller uncertainty of measurement than the calibration measurement capability. This means that a laboratory is required to state a larger uncertainty than that corresponding to the calibration measurement capability whenever it is established that the actual calibration process adds significantly to the uncertainty of measurement. Typically the equipment under calibration may give a contribution. The reported uncertainty of measurement can never be smaller than the calibration measurement capability.

All components which contribute significantly to the uncertainty of measurement shall be taken into account when evaluating the calibration measurement capability. The evaluation of the contributions that are known to vary with time or with any other physical quantity can be based on limits of possible variations assumed to occur under normal working conditions. For instance, if the used working standard is known to drift, the contribution caused by the drift between subsequent calibrations of the standard has to be taken into account when estimating the uncertainty contribution of the working standard.

In some fields the uncertainty of measurement may depend on some additional parameter, e.g., frequency of applied voltage when calibrating standard resistors. Such additional parameters shall be stated together with the physical quantity in question and the calibration measurement capability specified for the additional parameters. This can often be done by giving the calibration measurement capability as a function of these parameters.

The CMC when expressed as a single value must be achievable across the entire range indicated.

Appendix G: Measurement capability categories

Major fields of calibration Categories of calibration capabilities
1  Accoustic and vibration 1-1 Microphones
1-2 Sound level meters
1-3 Accoustic calibrators
1-4 Accelerometers
1-5 Others
2  Chemical 2-1 Reference materials
2-2 Instrumentation
2-3 Others
3  Dimensional 3-1 1D dimensional measuring equipment
3-2 2D dimensional measuring equipment
3-3 3D dimensional measuring equipment
3-4 Gauge blocks
3-5 Dimensional standards and gauges (other than gauge blocks)
3-6 Thread gauges
3-7 Thread measuring equipment
3-8 Speed measuring equipment
3-9 Others
4  Electrical 4-1 Voltage
4-2 Resistance
4-3 Current
4-4 Electrical power
4-5 Inductance
4-6 Capacitance
4-7 Magnetic properties
4-8 RF
4-9 Phase
4-10 Others
* Calibrations by electrical simulation will be categorized by the underlying measurement.
5  Force 5-1 Standard (eg. load cell)
5-2 Force measuring equipment
5-3 Torque standards
5-4 Torque measuring equipment
5-5 Others
6  Flow 6-1 Fluid
6-2 Gas
6-3 Viscosity
6-4 Others
7  Hardness 7-1 Standards (hardness blocks)
7-2 Hardness testers indirect verification
7-3 Hardness testers full verification
7-4 Others
8  Humidity 8-1 Humidity generator
8-2 Humidity measuring equipment
8-3 Others
9  Mass 9-1 Mass standards (nominal weights)
9-2 Mass standards (non-nominal weights)
9-3 Balances and scales
9-4 Density
9-5 Gravity
9-6 Others
10  Photometry and
radiometry
10-1 Photometry
10-2 Spectrophotometry
10-3 Colorimetry
10-4 Radiometry
10-5 Others
11  Pressure 11-1 Deadweight tester (hydraulic and pneumatic)
11-2 Pressure measuring equipment
11-3 Vacuum measuring equipment
11-4 Others
12  Radiological (including
ionizing radiation)
12-1 Dosimetry
12-2 Neutron measurement
12-3 Radioactivity
12-4 Others
13  Thermometry 13-1 Fixed point cells
13-2 SPRTs
13-3 Temperature measuring equipment (other than SPRT)
13-4 Thermal radiation measuring equipment
13-5 Temperature controlled enclosures
13-6 Others
14  Time and frequency 14-1 Frequency / Period
14-2 Time dissemination
14-3 Rise time and pulse characteristics
14-4 Time interval
14-5 Rotational speed
14-6 Others
15 Volume 15-1 Volume delivering equipment (e.g., Pipette)
15-2 Volume containing equipment
15-3 Others
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