The Inmetro’s General Coordination of Accreditation (Cgcre) granted the ISO 17043:2011 accreditation to ITAK – Instituto de Tecnologia August Kekulé Ltda under the code PEP021, according to the requirements established in ISO / IEC 17043: 2011.

ITAK is accredited to carry out Proficiency Tests for for:

1) Iron Ore
2) Gold Ore
3) Nickel Ore
4) Copper Ore and Concentrates
5) Ferro-Niobium Alloys
6) Silver

The Accreditation Scope and Certificate can be found at .


Proficiency Testing Schemes (Round Robin) are services aimed at evaluating the performance of calibration and testing laboratories through interlaboratory comparisons. The laboratory participation in a proficiency test is one of the most efficient ways to evaluate its technical competence, as it allows comparison in the same field, establishing a benchmarking. In a broad context, a proficiency test enables the participating laboratory to:

  • Continuous assessment and your performace monitoring;
  • Evidence or confirmation of achievement of reliable results;
  • Identification of problems/errors related to the performed tests/analyzes;
  • Taking corrective and preventive actions and evaluation of internal controls that the laboratory has;
  • Determination of performance characteristics, validation of methods;
  • Standardization / adequacy of methodologies to the market and recognition of results nationally and internationally;

Proficiency tests and interlaboratory comparisons are key to credibility enhancement of measurement results and, consequently, they contribute to the improvement of international trade and the prevention of technical barriers. ITAK´s proficiency tests are globally accepted, with the current participation of companies from over 30 countries.

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ITAK conducts annual proficiency tests (round robin) for several matrices as:

Gold ore

Iron ore


Copper ores and concentrates

Nickel Ore



You will be redirected to the login on ITAK PTP Management System.
If you are not registered yet, please, do it.
If you are already registered, enter your email and password.
After log in, you should choose which Proficiency Test to participate.

Click here to proceed