This document gives some typical examples of impedance spectra of polymer-coated and uncoated specimens (see AnnexA). Some guidance on interpretation of such spectra is also given. Further examples of spectra of low-impedance systems (range from, e.g. 10Ω to 1000Ω) are given in ISO/TR16208 and in ASTMG106.ISO16773‑2 gives guidelines for optimizing the collection of EIS data with focus on high-impedance systems.