Frequently Asked Questions
How should the samples be fixed?
Which fixative should I use?
Where can I buy formalin?
How to ship samples
How should samples be fixed?
Use sufficient formalin: A ratio of at least 1:20 is required (one part tissue to 19 parts formalin).Fix promptly: Place the sample in formalin as soon as possible.
Label clearly: Clearly mark the containers with the date, tissue type, and a unique ID.
Note on Sample Quality: A high-quality result always begins with thorough preparation. Correct fixation is absolutely essential for us to provide high-quality analysis. Because formalin penetrates tissue at a limited rate of approximately 1 mm per hour, you must ensure there is ample fluid relative to the volume of the tissue so that the formalin is not "depleted" before the tissue is fully fixed.
Where Can I Buy Formalin?
Formalin (formaldehyde solution) is widely used in aquaculture, veterinary diagnostics, and histology for tissue fixation and parasite treatment protocols. In Norway, formalin can be purchased from approved chemical suppliers that provide laboratory‑grade reagents. Buyers can choose pre‑filled formalin jars or purchase formalin separately and fill containers themselves. Always follow safety recommendations when handling, storing, and dispensing formalin.
Histo Company performs processing of submitted material as a technical service. Since correct fixation and pretreatment are critical to the final result, the sender bears full responsibility for sample quality. We therefore do not accept claims or complaints related to histological quality or diagnostic value if deficiencies are caused by fixation or handling prior to the sample's arrival at our laboratory.