Briefing: The PQS Catalogue and What Prequalification Does and Doesn’t Promise

Procurement officers increasingly treat inclusion in WHO’s Performance, Quality and Safety (PQS) catalogue as a shortcut to a buying decision. It is a useful filter, and our desk recommends it as a baseline. It is not, however, a substitute for matching a device to its deployment.

Prequalification establishes that a refrigerator, carrier, or logger meets defined performance and safety standards under specified test conditions. It does not establish that a given model suits a given climate zone, power situation, or service-support environment. A unit qualified for general use may still be the wrong choice for a 45 °C ambient, a panel-theft-prone site, or a district with no depot-level repair capacity.

The practical takeaway

Use the catalogue to exclude hardware that has not been independently tested. Then apply the site-specific questions—hold-over under local ambient, serviceability with available parts, legibility of alarms to the actual user—that prequalification was never designed to answer. The catalogue narrows the field; it does not make the choice.

Programs that conflate “prequalified” with “right for us” are the ones that find warm refrigerators in the field despite an unimpeachable paper trail.