Description
Grades 9-12.
- Learn about some environmental impacts of population growth
- Perform static aquatic toxicity testing
- Determine and graph the results of an LC50 test
Students are introduced to static toxicity tests used by the EPA and other health and environmental organizations to set water quality standards. During the lab, students prepare various concentrations of ammonium sulfate, a fertilizer component, and introduce Daphnia magna into their solutions. After 24 hours, students observe the mortality percentage of Daphnia in each concentration and determine the LC50 of ammonium sulfate.
Kit accommodates a class of 30 students working in groups of 6 and includes a voucher to request the perishable material later at your convenience. Contact us or return the voucher at least 2 weeks prior to requested delivery date to ensure prompt arrival of material.