US$ 235.50
Engineered with a higher spring constant than a classic coiled novelty spring
supplied with aluminum
0mL) (72) microscope slides Instructions and safety data sheet (SDS) packet
configured to make and break a circuit at the rhythm of a Morse-code transmission for telegraph-history demonstrations
half-blue painting
89-Atom Molecular Model Set Capacity_150mL Engineered with a higher springUsed to build a moderate range of organic and inorganic molecules, this 89 atom set in a compartmented case supplies durable plastic atoms and connecting links for chemistry investigations.
US$ 235.50
US$ 17.95
US$ 17.95