Immediately after sampling, tissue samples should generally be placed in vessels with the correct fixing solution, with a volume that allows them to lie freely in the solution. The standard fixation fluid is generally 10% neutral buffered formalin, which is roughly equivalent to 4% formaldehyde.
- Katarzyna Lundmark, Krynitz, Ismini Vassilaki, Lena Mölne, Annika Ternesten Bratel. Handläggning av hudprover – provtagningsanvisningar, utskärningsprinciper och snittning (Handling of skin samples - Instructions for sampling, cutting and incision. KVAST (Swedish Society of Pathology). Retrieved on 2019-09-09.
- . Paraformaldehyde, Formadehyde and Formalin. Duke University. Retrieved on 2019-12-17.