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MyPT

Proficiency Testing Provider
at SZK FAST

2010–2026

Participation statistics

Laboratory participation in our proficiency testing schemes and the evaluation of results.

programme rounds
134
test methods
111
laboratory participations
3,939
evaluated results
19,814
satisfactory results
92.3%
fully successful laboratories
76.9%

Evaluation of results

All fields

  • satisfactory 92.3% 18,290 results |z| < 2
  • questionable 4.2% 825 results 2 ≤ |z| < 3
  • unsatisfactory 1.7% 336 results |z| ≥ 3
  • outliers 1.8% 363 results excluded by an outlier test

What the ratings mean

Participation and evaluation by year

All fields

Participants' countries 2017–2026

All fields

MT CY CZ SK RS BE BG LT AT GR DZ BA HR HU PL IE IT RO GB DE MK AL NL PT SI GE MD ME LV EG DK EE AZ NO AM ES
Countries
41
Registrations
3,274

Programme registrations 2017–2026

Colombia Brazil Pakistan Malaysia Singapore
  • 1–9
  • 10–49
  • 50–199
  • 200 and more
  • Brno
  1. Czechia1,601
  2. Slovakia304
  3. Serbia195
  4. Belgium122
  5. Bulgaria106
  6. Lithuania102
  7. Austria91
  8. Greece81
  9. Algeria73
  10. Bosnia and Herzegovina67
  11. Croatia59
  12. Hungary57
  13. Poland56
  14. Ireland48
  15. Italy43
  16. Romania36
  17. Colombia26
  18. United Kingdom24
  19. Malaysia22
  20. Germany20
  21. Albania19
  22. North Macedonia19
  23. Cyprus18
  24. Netherlands11
  25. Portugal11
  26. Slovenia11
  27. Georgia10
  28. Moldova7
  29. Montenegro6
  30. Latvia5
  31. Singapore5
  32. Egypt4
  33. Denmark3
  34. Brazil2
  35. Estonia2
  36. Malta2
  37. Azerbaijan2
  38. Armenia1
  39. Norway1
  40. Pakistan1
  41. Spain1

Comparison of testing fields

Field Years Rounds Methods Participations Results Satisfactory Successful labs
ZZBHardened concrete 2010–2026 32 18 1,352 4,253 92.3% 82.8%
ZKAggregates 2010–2026 15 15 850 6,193 91.3% 67.1%
ZZSoils 2012–2025 15 11 667 5,101 91.5% 65.4%
ZCBFresh concrete 2012–2026 28 7 423 1,478 97.0% 90.8%
ZMCMortars, cements and adhesives 2012–2025 12 17 229 959 94.7% 85.6%
ZVPPlastics 2014–2026 9 13 133 601 93.3% 72.7%
ZZPMasonry units 2013–2025 11 5 92 188 93.1% 84.3%
ZAPAsphalt mixtures and binders 2025–2026 2 14 90 608 93.9% 74.4%
ZOReinforcing steel 2014–2025 7 1 63 179 86.6% 77.8%
ZHUFinished road surfaces 2015–2026 3 6 45 163 95.1% 87.5%
ZDTimber 2018 1 3 8 26 96.2% 87.5%
PAUPolycyclic aromatic hydrocarbons 2025 1 1 5 65 96.9% 60.0%
Total 2010–2026 134 111 3,939 19,814 92.3% 76.9%

Reading the results

All fields

The z-score tells how many standard deviations a laboratory's result lies from the assigned value. The closer to zero, the better; the sign shows whether the result is higher or lower.

… … −3 −2 0 +2 +3 z-score ✕ ! ? ✓ ? ! ✕
Diagram: one hundred results following the normal distribution – 96 satisfactory and 4 questionable; an unsatisfactory result occurs roughly once in 370. Two outliers stand apart and do not enter the evaluation.

  • satisfactory|z| < 2

    The result agrees with the other laboratories.

    Theory
    95.45%
    Our schemes
    94.0%

  • questionable2 ≤ |z| < 3

    Warning signal: the result is borderline and the laboratory should review its test procedure.

    Theory
    4.28%
    Our schemes
    4.2%

  • unsatisfactory|z| ≥ 3

    The result differs too much. The laboratory looks for the cause and takes corrective action.

    Theory
    0.27%
    Our schemes
    1.7%

  • outliersexcluded by an outlier test

    The laboratory mean lies too far from the others (Grubbs' test), or the scatter of its repeated measurements is conspicuously large (Cochran's test). The result is excluded before the evaluation so that it does not distort the assigned value.

    Our schemes
    1.8%

Theory: how the ratings would come out if, after excluding outliers, the results followed the normal distribution exactly. Our schemes: share of results after excluding outliers; for outliers, share of all results.

How to read the figures

  • A participation is one laboratory in one programme round; for a test method, a laboratory that performed the method in that round.
  • A result is one laboratory result for one parameter and test item, evaluated by z-score in the final report.
  • Outliers are results of participants excluded by the Cochran or Grubbs test; they do not count as successful.
  • A fully successful laboratory has all its results in the given method and round rated satisfactory.
  • The criteria are taken from the final reports in accordance with ISO 5725-2, ISO/IEC 17043 and ISO 13528.
  • The map of countries is based on registrations submitted through the website in 2017–2026; earlier rounds are not included.