"Freeze-Dried Specimens"

Two o strains of Escherichia coli; one exhibiting Ampicillin resistance, and one sensitive, but competent and ready to receive the plasmid that confers resistance.

Each vial is a dropper bottle with enough freeze-dried serum to make 5 mL of reconstituted serum

Eight High-Quality Fossils for Introductory Classes

This set features a handy, economical selection of density cubes.

This Premium introductory collection features 12 palm-sized specimens perfectly sized for identifying details.

The Specific Heat Specimens Set can be used to determine the specific heats of a variety of common metals.

Well-preserved individual teeth from what may be the largest known carnivorous dinosaur found to date in the fossil record. Exceptional quality and detail. Average size: 1 ^₁/₂" L x ¹/₂" W. Morocco.

Exceptional perch specimens plus trays and pins, magnifiers, specimen storage bags, and a dissection manual are included in one package.

Exceptional earthworm specimens plus dissection trays and pins, magnifiers, specimen storage bags, and a dissection manual are all included in one package.

Dissection labs just got easier, with our high-quality specimens and dissection materials including trays and pins, magnifiers, specimen storage bags, and a dissection manual all in one package.

These easy-to-use guides feature full-color photographs of living specimens as you would see them in their natural habitats, making identification of specimens a breeze.

View Daphnia Heart Rate Easily

How do different solvents affect the freezing point?

Ensure your students get the most out of their starfish dissection lab with our complete set of materials that includes dissection trays and pins, magnifiers, specimen storage bags, and a dissection manual. Specimens are vacuum packed. The set includes enough materials for 12 setups.

Freeze time in the apparent motion of a vibrating string.

Designed for high school and elementary college courses, these rock and mineral specimens provide a complete range of materials for comparisons of igneous, sedimentary and metamorphic rocks.