"AP physics"

Two strains of Escherichia coli (donor and host) with complementary sensitivities to Ampicillin and Streptomycin. Watch them trade traits via conjugation.

Learn genetics like Mendel.

Ames test strain for detecting carcinogens. Causes infection in humans. 

Formalin Preserved.

Our Most Popular collection.

Give your students a piece of outerspace.

Gray and poorly sorted, with a gritty texture.

Everything Students Need to Work Independently to Identify Rocks and Minerals

A Complete Kit to Communicate the Concept of Hardness in Minerals

Substantial Set of Economically Important Minerals