Distinctness, uniformity and stability (DUS) for hops is carried out in the reference collection according to the Protocol for testing distinctness, uniformity and stability – Humulus lupulus L. (hops) (CPVO-TP / 227/1 dated 15.11.2006). Varieties in the assessment are in process of entry into the Slovenian National List of Varieties.
IHPS has also been appointed to perform examinations of varieties of ornamental plants.