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Sea Urchin Embryology: Simple Dilutions

Starting from a known concentration students learn to use dilutions to determine the concentration of an unknown. The following skills are used in this lesson: 1. making dilutions 2. reading the meter on a simple homemade spectrophotometer 3. keeping careful laboratory records 4. graphing on linear graph paper 5. determining an unknown concentration from known 6. using a colored filter to enhance contrast and sensitivity

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Resource Type: Graph/Chart, Illustration, Image, Laboratory or Hands-On Activity, Assessment: exam w/o answer key
Audience Level: High School lower division (Grades 9-10), High School upper division (Grades 11-12), Undergraduate lower division (Grades 13-14), Undergraduate upper division (Grades 15-16)

Author and Copyright

Authors and Editors: PhD David Epel of Stanford U. Hopkins Marine Station
Publisher: Stanford U. Hopkins Marine Station
Format: text/html
Copyright and other restrictions: No
Cost: No


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