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Tree Cross Section
Provide every student in your class with their own slice of time. Each cross section measures 3 1/2” to 4 1/2” in diameter and features clearly delineated rings.
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Brine Shrimp Eggs
Place these eggs in a brine solution for two days in order to make the shrimp (Artemia) hatch. Our special processing technique allows you to store the eggs for nearly indefinite periods of time. 7 grams.
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Shell Assortment
Is your aquarium missing that “natural” feel? This colorful assortment of shells is ideal for turning any fish tank into a realistic environment. Package of 30.
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Preserved Earthworms
Formalin preserved earthworms. Available in vacuum packs or jars.
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Preserved Southern Crayfish
Standard formalin preserved crayfish. Shipped in nontoxic Wardsafe.
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Petrified Wood
Put a piece of Earth's ancient history in the hands of your students.
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Rhizopus stolonifer (nigricans) (+)
Zygomycete. Common black bread mold. Lab contaminant. Mating strain, cross with Rhizopus stolonifer (nigricans) (-) to produce zygospores. Incubation temperature 25°C. Potato dextrose agar growth medium.