Specimens
Specimens are available for use in a wide variety of organic and inorganic testing procedures. Organic samples can be utilized for dissection purposes or studying whole preserved or life specimens, with practical examples in cellular biology or the internal structures of whole organs and complex multicellular systems. Rock specimens are useful for studying textures, grain sizes, and other features brought about by pressure, temperature, and other natural forces, offering a glimpse into the Earth’s geological history.
Hardwood/Softwood Comparison Riker Mount, Riker Mount
Accompanying Diagrams Detail Growth Rings
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Stem Adaptation Riker Mount
Learn Plant Morphology by Studying Stem Morphology
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Commerical Grains Collection Riker Mount
Riker mount of commerical grains for display.
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Comparison of Leaf Venation Riker Mount
Riker mount of leaf venation comparison for display.
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Ward's® Live Caenorhabditis elegans. culture
Ideal for use as a model system, this free-living nematode has biological processes similar to those of other animals. The transparent animal normally inhabits soil.
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Universal Specific Gravity Kit for an Electronic Scale
The Universal Specific Gravity Kit is designed to be used with any electronic scale with a minimum capacity of 15 grams and a tare (re-zeroing) function to easily measure the specific gravity of gemstones and minerals.
Just weigh the stone "in air" on the integrated weighing platform of the scale, then without changing the setup, weigh the stone in water by placing it in the underwater weighing pan of the gem holder suspended above the platform. Plug the two values into the specific gravity equation and obtain the specific gravity of your stone.
Includes: lightweight gem holder support and underwater weighing pan, independent, spill-resistant, adjustable beaker support, beaker for filling with water - 100ml capacity, aluminum test weight, stainless steel tweezers, instructions, reproducible Specific Gravity worksheet, table of 300 common minerals/gems sorted by SG, with 6 other properties, including refractive index.
Note: shown with Boreal Balance - not included.
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Pocket Hardness Points Set
Students determine a mineral's hardness between five and 10 on Mohs' scale.
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Polysiphonia
Marine. Filamentous; polysiphonious construction. Collected.
Characterized by reddish plastids (rhodoplasts).
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Ward's® Prepared Xenopus laevis Reproductive Tissue
Prepared reproductive tissues from Xenopus laevis. Products offered include ovaries, testes, and oocytes.
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Rock Cycle Riker Mount
The cycles of rock formation, beautifully simplified!