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Good Practice Guide on Emissivity Conversion Published

The Good practice guide on the conversion of near-normal directional emissivity into hemispherical emissivity with a target uncertainty below 5 % (2.5–50 µm) has been published by the PaRaMetriC consortium (EPM project 21GRD03; PTB, CAE, RISE, FIW München, LNE, INRIM; 11 authors including J. Manara and C. Monte). It was released on Zenodo on 30 September 2025.

This guide addresses one of the most common practical challenges in emissivity measurement: how to reliably convert near-normal directional emissivity into hemispherical emissivity, with a target uncertainty below 5 % over the 2.5–50 µm range.

The guide is freely available on Zenodo and represents an important step toward standardized practices in our field.

Read the Good Practice Guide on Zenodo (DOI: 10.5281/zenodo.17684770)

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