Double Injected Dogfish specimen preserved in Formalin and packed in Carosafe.
Double injection specimens have the arteries injected with red latex and the hepatic system with yellow latex.
Carosafe® is Carolina Biological's proprietary shipping and holding fluid for specimens that have been previously fixed in formalin.
Although specimens are first preserved with a formalin solution, they are then washed and placed in formaldehyde-free Carosafe®.
Holding the specimen in Carosafe® reduces the presence of formaldehyde residues left over from the initial preserving process, thereby diminishing or eliminating unpleasant odor.
This produces a formalin-preserved specimen that, when dissected, minimizes student and educator exposure to formaldehyde.
The spiny dogfish shark, a member of the class Chondrichthyes, is a popular dissection specimen in general biology and anatomy courses.
It is useful for learning about cartilaginous fish and for studying comparative and vertebrate anatomy.
Mature specimens allow for a thorough investigation of adult structures and the larger size is ideal for students working in pairs or small groups.
Characteristics of the shark are intriguing to student, including: Cartilaginous skeleton, five pairs of gill slits and the lack of a swim bladder and operculum.
Notes:
- Carosafe® specimens should be washed before use and dissected in well ventilated rooms with appropriate hand, eye and body protection.
- For best results, carefully unpack your delivery of preserved specimens as soon as it arrives.
- Store the specimens in the dark in a single layer on a flat surface. A drawer or cupboard shelf is ideal.
- Do not refrigerate.
- Avoid stacking the specimens on top of each other or otherwise putting weight on them.
- Undue pressure can cause breakages in brittle specimens such as crayfish and grasshoppers, and can cause deformation of soft-tissue specimens such as brains and kidneys.
