Practical references for measurement teams.

Everything here is free, written against the cited standards, and usable today — no sign-up, no gated PDFs.

Pt100Try it

Class AA
Class A
Class B

Temperature100 °C

R 138.505 ΩdR/dt 0.3793 Ω/°CClass A ±0.35 °C

IEC 60751: R(t) from the Callendar-Van Dusen equation; bands are the class B, A and AA tolerances over -50 to 250 °C.

ISO/IEC 17025 pack

116 documents forming one management system for a calibration laboratory: quality manual, procedures, forms, checklists, guides, an uncertainty calculator and a GMP validation set. Three are free.

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Learning paths

8 guided reading sequences through the article library — mapping, uncertainty, certificates, ISO/IEC 17025, GDP, calibration practice, validation, equipment.

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Checklists

6 interactive, printable checklists that mirror review gates: mapping study, certificate review, data quality, excursion response, choosing a laboratory, monitoring qualification.

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Templates

5 downloadable structures: mapping protocol and report, uncertainty budget, excursion record, calibration register.

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Calculators

31 free browser calculators: uncertainty budget, guard band, MKT from logger data, Pt100 conversion, dew point.

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Glossary

22 definitions aligned with the VIM and laboratory practice, each with its own page.

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Standards index

29 standards and guidance documents the library draws on — what each covers and which articles cite it.

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