It depends on what the specimen is.
It depends on what the specimen is, blood ionization specimens left too long will make the potassium ion rise, separation of colloidal storage of blood specimens and then centrifuged to increase potassium ion. Closely control the specimen error factors.
Specimen processing methods can be taken as a whole individual (or even more than one individual, such as bacteria, algae and other microorganisms, or fungi and other small individuals and aggregates in one place), or a part of the sample, after such as physical air-drying, vacuum, chemical antiseptic treatment and other processing can be made.
Expanded information:
Before making a specimen, it is necessary to take out the entrails of the insect to facilitate rapid drying after insertion. rapid drying after needle insertion. However, insects with extremely thin bodies, such as the damselfly in dragonflies, may not have to have their guts removed.
Dissection can be done by inserting forceps directly through the neck and dorsal connecting membrane of the prothorax of the insect and removing the individual organs. Alternatively, a cut can be made in the side of the abdomen along the connecting membrane of the dorsal and ventral plates, and the organs can then be removed with forceps.
The next step is to pinch a long cotton plug of skimmed cotton and slowly insert it into the hollowed-out insect's abdominal cavity with tweezers, maintaining the original body shape of the insect.
Baidu Encyclopedia - Taxidermy