33156000 - Psychology testing devices

CPV code 33156000 in the EU Common Procurement Vocabulary refers to Psychology testing devices. It sits at level 4 of the CPV hierarchy as a category within the 33 division. This code is nested directly under 33150000, narrowing the broader category into the specific area of psychology testing devices. As a leaf code, 33156000 has no further subdivisions and represents the most precise classification available in this branch — buyers should reference it directly in tender notices when the procurement primarily concerns psychology testing devices. Contracting authorities across the EU use 33156000 in TED notices and national procurement portals to signal that a tender relates to psychology testing devices.