Insect and Larva Collecting Net Electricity & Magnetism_Electrochemistry 3 glass features 12/21 cone

3 glass features 12/21 cone with flat bottom for sealing ground joint vessels and chemistry apparatus

Glazed porcelain beehive shelf measures 4 inches with glazed interior and exterior for gas collection over water in pneumatic trough procedures

Glass equilibrium tubes with plastic base demonstrate pressure equilibrium

Virtually friction-free 2-meter air track shipped with vehicles

Six replacement gold leaves cut to fit the standard gold-leaf electroscope

Insect and Larva Collecting Net Electricity & Magnetism_Electrochemistry 3 glass features 12/21 coneFine mesh dual purpose net captures adult insects overhead and aquatic larvae below the surface for field entomology and life cycle observation work.