89-Atom Molecular Model Set Capacity_150mL configured to make and break

configured to make and break a circuit at the rhythm of a Morse-code transmission for telegraph-history demonstrations

filtration demonstrations

Tulgren filter funnel constructed from borosilicate glass extracts small organisms from soil samples through heat-driven migration collection methods

half-blue painting

providing a measurable projection surface for sizing real images formed by lenses and concave mirrors

89-Atom Molecular Model Set Capacity_150mL configured to make and breakUsed 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.