US$ 42.00
Engineered with a higher spring constant than a classic coiled novelty spring
Tulgren filter funnel constructed from borosilicate glass extracts small organisms from soil samples through heat-driven migration collection methods
filtration demonstrations
Reading both light and heavy liquids on a single dual-scale stem from 0
providing a measurable projection surface for sizing real images formed by lenses and concave mirrors
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$ 42.00
US$ 44.00
US$ 15.00
US$ 22.00
US$ 18.00
US$ 24.00
US$ 68.00