For a class of 30. Students study the anatomy of a crustacean, the most widespread group of aquatic arthropods. Kit includes 30 Carolina's Perfect Solution® single-injected (circulatory system) crayfish, 30 self-locking storage bags, and a teacher’s manual with blackline masters for reproducible student guides.

Carolina's Perfect Solution - an alternative to formaldehyde - is a revolutionary fixative that produces superior specimens while improving the safety of your classroom or lab. Tissues and organs are extremely lifelike and retain better color and texture than with other preparations.