INTERLABORATORY COMPARISONS – Proficiency Testing Provider

SA Quality for Metrology is an accredited Proficiency Testing Provider in the field of calibration.

In accordance with  ISO/IEC 17043:2010 standards, we are accredited by the Italian body Accredia with PTP Accreditation Certificate PTP No. 0024P.

According to EA, IAF and ILAC Mutual Recognition Agreements we are authorized to operate at an international level.

OUR PT PROVIDING SERVICES
Accreditation certificate
What Proficiency Testing is
Accreditation table
How to participate in our Interlaboratory Comparisons
List of accredited schemes in the flexible scope

Organization of Interlaboratory Comparisons

In order to consistently confirm their performance over time, any testing / calibration laboratory needs to participate periodically in Interlaboratory Comparisons (ILC) – also called Proficiency Testing (PT) – as required by ISO/IEC 17025 standards.

ILCs are effective tools used to assess the performance of specific tests or measurements, and allow for accurate and continuous monitoring. This enables the laboratory to validate its uncertainty statements and ensure the metrological traceability.

Furthermore, according to ISO/IEC 17025 standards, participation in ILCs is a mandatory requirement for obtaining and maintaining specific accreditations for testing or calibration procedures, and may also be requested by partners or customers / clients.

Regardless of the results, participating in ILCs is always advantageous. Positive results provide a guarantee of quality and reliability, instilling confidence in customers / clients. Unsatisfactory results prompt laboratories to improve their procedures and service efficiency.

What Proficiency Testing is
How to participate in our Interlaboratory Comparisons

Our key points of excellence

  • Registration for Proficiency Testing is done through our Proficiency Testing Web Portal (PT Portal). Information and documents are uploaded directly to the PT Portal, eliminating the need for numerous email exchanges with your provider.
  • You will always have direct contact with the cycle coordinator.
  • All cycle-related information is managed directly on the PT Portal, ensuring maximum transparency.
  • We issue a report for each individual participating laboratory, allowing you to access simplified reports specific to your activities.
  • At the end of the cycle you will have the samples available free of charge for one week to carry out your internal tests with the reference value.

Proficiency Testing for Inspection Bodies and Testing Laboratories (compliance with ILAC P9 policy)

To support organizations that must comply with the obligations set out in the ILAC P9:01/2024 policy, we organize Interlaboratory Comparisons expressly dedicated to:

• Inspection Bodies accredited in accordance with ISO 17020 standard;
• Testing Laboratories accredited in accordance with ISO 17025 standard;

that perform in-house calibration of their working samples.

These comparisons are listed in our Proficiency Testing calendar (published at the bottom of this page), marked with the following special codes:

  • Inspection Body ISO 17020.
  • Testing Lab ISO 17025.
Go to the Proficiency Testing calendar

Organization of Bilateral Interlaboratory Comparisons

In addition to circuit-based tests, we also organize Bilateral Proficiency Testing. In this type of testing, a single participating laboratory is compared to a reference laboratory.

We organize Bilateral Comparisons upon request, when the requesting laboratory needs to obtain a specific accreditation or when there are no other laboratories performing the same type of calibration.

If you wish to request a Bilateral Comparison, please send us an email specifying:

  • Type of instrument.
  • Calibration methodology.

We will provide you with a quotation and information regarding participation methods.

Bilateral Proficiency Testing requests

Interlaboratory Comparisons program and registration

Below we present the updated ILCs calendar in which you can participate. By clicking on SHOW you can access the description card for the respective comparison, which includes technical information and participation methods. From each card you can also download the participation form, which shall be completed and uploaded to the PT Portal upon registration.

To register for an ILC, you will need to create an account that will grant you access to the reserved area of our website and the PT Portal. On the portal you can autonomously register for comparisons, with no need to send us requests or attached documents by email.

If you want to participate in a Bilateral Interlaboratory Comparison, please send us a request by email, specifying the type of instrument and calibration methodology involved in the comparison. We will provide you with a quotation and information regarding participation methods.

Year: 2025
Updated to: 2025 August
PT codeDescriptionRegistration untilExpected conclusionState*Details
ILC006-2025Gauge blocks up to 100 mm Rev00May 2025January 2026AccreditedShow
ILC005-2025Cylindrical plain plug gauge up to 200 mm Rev00September 2025May 2026AccreditedShow
ILC024-2025Uniaxial testing machine Rev01CLOSEDMarch 2025Not AccreditedShow
ILC002-2025Cylindrical ring gauges up to 100 mm Rev00September 2025Maggio 2026AccreditedShow
ILC008-2025Digital calliper (0-300) mm Rev00REGISTRATION CLOSEDNovember 2025AccreditedShow
ILC009-2025Digital micrometer (75-100) mm Rev00May 2025January 2026AccreditedShow
ILC004/A-2025Analog dial gauge Rev00April 2025December 2025AccreditedShow
ILC001-2025Gauge blocks up to 500 mm Rev00June 2025April 2026AccreditedShow
ILC026-2025Temperature calibrator (measurement and simulation) Rev00CLOSEDFebruary 2026Not AccreditedShow
ILC011/D-2025Torque wrench (20-200) N m Rev00August 2025April 2026AccreditedShow
ILC011/C-2025Torque wrench (100-1000) N m Rev00May 2025January 2026AccreditedShow
ILC011/A-2025Torque wrenches up to 250 N m (ISO 6789-2 and DKD-R 3-7) Rev00August 2025April 2026AccreditedShow
ILC027-2025Brinell Hardness Tester HBW 10/3000 Rev00August 2025April 2026AccreditedShow
ILC003-2025Thread plug gauge Rev00 (NIST calibration)August 2025April 2026AccreditedShow
ILC004/B-2025Digital dial gauge (0-12,5) mm Rev00June 2025February 2026AccreditedShow
ILC028/A-2025Digital pressure measuring device 700 bar Rev00CLOSEDFebruary 2026Not AccreditedShow
ILC028/B-2025Digital pressure measuring device 2500 bar Rev00CLOSEDFebruary 2026Not AccreditedShow
ILC018-2025Torque transducers up to 2000 N m Rev00August 2025April 2026AccreditedShow
ILC020-2025Coordinate measuring machines CMM Rev00August 2025December 2025AccreditedShow
ILC021/A-2025Reference weights up to 20 Kg Rev00 (Inspection body ISO 17020)CLOSED - FULL (See ILC021/A_2-2025)December 2025Not AccreditedShow
ILC029/A-2025Reference tank 20 L Rev00 (Inspection body ISO 17020)May 2025February 2026Not AccreditedShow
ILC030/A-2025Balance 100 kg (NAWI) Rev00 (Inspection body ISO 17020)CLOSEDApril 2026Not AccreditedShow
ILC030/B-2025Precision balance 60 g (NAWI) Rev00 (Testing Labs ISO 17025)CLOSEDApril 2026Not AccreditedShow
ILC032-2025Thermometric measuring chain with Pt100 Rev00 (Testing Labs ISO 17025)CLOSEDApril 2026Not AccreditedShow
ILC033-2025Micropipette 1 mL Rev00 (Testing Labs ISO 17025)CLOSEDApril 2026Not AccreditedShow
ILC021/A_2-2025Reference weights up to 20 Kg Rev00 (Inspection body ISO 17020)August 2025February 2026Not AccreditedShow
ILC011/E-2025Torque wrench (2-20) N m Rev00August 2026April 2026AccreditedShow
ILC011/F-2025Torque screwdriver (1-10) N m Rev00August 2025April 2026AccreditedShow
Year: 2026
Updated to: 2025 August
PT codeDescriptionRegistration untilExpected conclusionState*Details
ILC005-2026Cylindrical plain plug up to 100 mm Rev00June 2026February 2027AccreditedShow
ILC008-2026Digital calliper (0 - 150) mm Rev00March 2026November 2026AccreditedShow
ILC009-2026Digital micrometer (0 - 25) mm Rev00March 2026Novembre 2026AccreditedShow
ILC004/B-2026Digital dial gauge (0 - 25) mm Rev00February 2026October 2026AccreditedShow
ILC012-2026Shore A Hardness Tester Rev00March 2026June 2026AccreditedShow
ILC025-2026Charpy impact pendulum 300 J Rev00January 2026February 2026Not AccreditedShow
ILC011/C-2026Torque wrench (100 - 1000) N·m Rev00August 2026April 2027AccreditedShow
ILC024/D-2026Uniaxial compression testing machine 3000 kN Rev00March 2026June 2026Not AccreditedShow
ILC034-2026Universal Length Measuring Machine Rev00February 2026May 2026AccreditedShow
ILC033-2026Micropipette 1 mL Rev00 (Testing Labs ISO 17025)February 2026October 2026Not AccreditedShow
ILC032-2026Thermometric measuring chain with Pt100 Rev00 (Testing Labs ISO 17025)February 2026October 2026Not AccreditedShow
ILC030/B-2026Precision balance 60 g (NAWI) Rev00 (Testing Labs ISO 17025)February 2026October 2026Not AccreditedShow
ILC030/A-2026Balance 100 kg (NAWI) Rev00 (Inspection body ISO 17020)February 2026October 2026Not AccreditedShow
ILC028/B-2026Digital pressure measuring device 2500 bar Rev00March 2026November 2026Not AccreditedShow
ILC028/F-2026Digital pressure measuring devices 70 bar and 700 bar Rev00March 2026November 2026Not AccreditedShow
ILC026-2026Temperature calibrator (measurement and simulation) Rev00March 2026November 2026Not AccreditedShow
ILC006-2026Gauge blocks up to 100 mm Rev00August 2026April 2027AccreditedShow
ILC011/A-2026Torque wrenches up to 250 N m (ISO 6789-2 and DKD-R 3-7) Rev00February 2026October 2026AccreditedShow
ILC011/D-2026Torque wrench (20-200) N m Rev00August 2026April 2027AccreditedShow
ILC011/E-2026Torque wrench (2-20) N m Rev00May 2026March 2027AccreditedShow
ILC011/F-2026Torque screwdriver (1-10) N m Rev00May 2026March 2027AccreditedShow
ILC018-2026Torque transducers up to 2000 N m Rev00May 2026March 2027AccreditedShow
ILC021/A-2026Reference weights up to 20 Kg Rev00 (Inspection body ISO 17020)February 2026October 2026Not AccreditedShow
ILC029/A-2026Reference tank 20 L Rev00 (Inspection body ISO 17020)February 2026October 2026Not AccreditedShow
ILC015/B-2026Roughness sample (Rk) Rev00June 2026February 2027AccreditedShow
ILC002-2026Cylindrical ring gauges up to 200 mm Rev00August 2026April 2027AccreditedShow
ILC010-2026Thread ring gauges Rev00May 2026March 2027AccreditedShow
ILC019/B-2026Steel measuring tape Rev00August 2026April 2027AccreditedShow
ILC020-2026Coordinate measuring machines CMM Rev00February 2026June 2026AccreditedShow
ILC039-2026Digital micrometer head (0-100) mm Rev00May 2026March 2027AccreditedShow
ILC021/B-2026Standard weights up to 500 g Rev00 (Inspection body ISO 17020)February 2026October 2026Not AccreditedShow
Year: 2027
Updated to: 2025 August
PT codeDescriptionRegistration untilExpected conclusionState*Details
ILC013-2027Rockwell Hardness Tester Rev00March 2027June 2027AccreditedShow
ILC006-2027Gauge blocks up to 100 mm Rev00February 2027December 2027AccreditedShow
ILC001-2027Gauge blocks up to 600 mm Rev00February 2027December 2027AccreditedShow
ILC002-2027Cylindrical ring gauges up to 100 mm Rev00March 2027December 2027AccreditedShow
ILC011/D-2027Torque wrench (20 - 200) N·m Rev00February 2027December 2027AccreditedShow
ILC011/C-2027Torque wrench (100 - 1000) N·m Rev00February 2027December 2027AccreditedShow
ILC011/A-2027Torque wrenches up to 250 N·m (ISO 6789-2 and DKD-R 3-7) Rev00March 2027December 2027AccreditedShow
ILC021/B-2027Standard weights up to 500 g Rev00 (Inspection body ISO 17020)February 2027October 2027Not AccreditedShow
ILC011/E-2027Torque wrench (2-20) N m Rev00May 2027March 2028AccreditedShow
ILC011/F-2027Giravite dinamometrico (1-10) N m Rev00May 2027March 2028AccreditedShow
ILC003-2027Thread plug gauge Rev00May 2027March 2028AccreditedShow
ILC004/A-2027Analog dial gauge Rev00February 2027October 2027AccreditedShow
ILC004/B-2027Digital dial gauge (0-12,5) mm Rev00February 2027October 2027AccreditedShow
ILC008-2027Digital calliper (0 - 150) mm Rev00February 2027October 2027AccreditedShow
ILC009-2027Digital micrometer (50-75) mm Rev00February 2027October 2027AccreditedShow
ILC014-2027Roundness sample Rev00May 2027March 2028AccreditedShow
ILC020-2027Coordinate measuring machines CMM Rev00February 2027June 2027AccreditedShow
ILC021/A-2027Reference weights up to 20 Kg Rev00 (Inspection body ISO 17020)February 2027October 2027Not AccreditedShow
ILC024/C-2027Uniaxial testing machine 600 kN Rev00February 2027June 2027Not AccreditedShow
ILC030/B-2027Precision balance 60 g (NAWI) Rev00 (Testing Labs ISO 17025)February 2027October 2027Not AccreditedShow
ILC032-2027Thermometric measuring chain with Pt100 Rev00 (Testing Labs ISO 17025)February 2027October 2027Not AccreditedShow
ILC033-2027Micropipette 1 mL Rev00 (Testing Labs ISO 17025)February 2027October 2027Not AccreditedShow
ILC028/F-2027Digital pressure measuring devices (-15÷15) kPa e (-100÷0) kPa Rev00May 2027March 2028Not AccreditedShow
ILC031-2027Temperature and humidity controlled enclosures Rev00February 2027June 2027Not AccreditedShow
Year: 2028
Updated to: 2025 August
PT codeDescriptionRegistration untilExpected conclusionState*Details
ILC021/B-2028Standard weights up to 500 g Rev00 (Inspection body ISO 17020)February 2028October 2028Not AccreditedShow
ILC011/E-2028Torque wrench (2-20) N m Rev00May 2028March 2029AccreditedShow
ILC011/F-2028Giravite dinamometrico (1-10) N m Rev00May 2028March 2029AccreditedShow
ILC011/A-2028Torque wrenches up to 250 N·m (ISO 6789-2 and DKD-R 3-7) Rev00February 2028March 2029AccreditedShow
ILC011/C-2028Torque wrench (100-1000) N·m Rev00August 2028April 2029AccreditedShow
ILC011/D-2028Torque wrench (20-200) N·m Rev00August 2028April 2029AccreditedShow
ILC004/B-2028Digital dial gauge (0-25) mm Rev00May 2028March 2029AccreditedShow
ILC005-2028Cylindrical plain plug gauge up to 200 mm Rev00August 2028April 2029AccreditedShow
ILC006-2028Gauge blocks up to 100 mm Rev00August 2028April 2029AccreditedShow
ILC008-2028Digital calliper (0 - 300) mm Rev00May 2028March 2029AccreditedShow
ILC009-2028Digital micrometer (0-25) mm Rev00May 2028March 2029AccreditedShow
ILC010-2028Thread ring gauges Rev00May 2028March 2029AccreditedShow
ILC015-2028Roughness samples Rev00 (Ra)May 2028March 2029AccreditedShow
ILC018-2028Torque transducers up to 2000 N m Rev00August 2028April 2029Not AccreditedShow
ILC019/A-2028Steel ruler Rev00May 2028March 2029AccreditedShow
ILC020-2028Coordinate measuring machines CMM Rev00February 2028June 2028AccreditedShow
ILC021/A-2028Reference weights up to 20 Kg Rev00 (Inspection body ISO 17020)February 2028October 2028Not AccreditedShow
ILC022-2028Vickers Hardness Tester Rev00February 2028June 2028AccreditedShow
ILC024/B-2028Uniaxial testing machine 100 kN Rev00February 2028June 2028Not AccreditedShow
ILC026-2028emperature calibrator (measurement and simulation) Rev00March 2028Novembre 2028Not AccreditedShow
ILC028/F-2028Digital pressure measuring devices 70 bar and 700 bar Rev00March 2028November 2028Not AccreditedShow
ILC029/A-2028Reference tank 20 L Rev00 (Inspection body ISO 17020)February 2028October 2028Not AccreditedShow
ILC030/B-2028Precision balance 60 g (NAWI) Rev00 (Testing Labs ISO 17025)February 2028October 2028Not AccreditedShow
ILC032-2028Thermometric measuring chain with Pt100 Rev00 (Testing Labs ISO 17025)May 2028March 2029Not AccreditedShow
ILC033-2028Micropipette 1 mL Rev00 (Testing Labs ISO 17025)February 2028October 2028Not AccreditedShow
ILC034-2028Universal Length Measuring Machine Rev00May 2028September 2028AccreditedShow
This schedule is updated quarterly.
Each comparison will be activated with the participation of at least 5 laboratories.
*Accreditation is the certification by a third party (ACCREDIA) that the p.t.p. complies with the requirements of the international reference standard UNI CEI EN ISO / IEC 17043 and other ACCREDIA prescriptive documents in the organization of interlaboratory comparisons, ensuring their technical and organizational competence.
The list of accredited schemes is shown in the attachment to the accreditation certificate no. 0024P.
How to participate in Proficiency Testing

CONTACT US

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