The channel in which to launch a formal complaint, in this case, would be the Speak Up-system (Si-fra).
If you would like to speak to the Occupational Health Service Unit (Bedriftshelsetjenesten, BHT), the safety line (vernetjenesten), the Science ombudsman (Vitenskapsombudet), or other people who can provide support.
You can make an appointment with the Tekna group at UiO and the Akademikerne-UiO office if you want to discuss and get advice!
Remember that you can reach out to Tekna (state level https://www.tekna.no/en/) if you would like legal advice.