Battery Box, Model C Capacity_50mL Shows oxygenated and deoxygenated blood

Shows oxygenated and deoxygenated blood paths between heart chambers and alveolar surfaces through seven hand-painted removable parts designed with medical-professional input

Research-grade oxygen spectrum tube at 26cm with a 10cm central capillary

combining protective gripping with angular adjustment on one piece

dual bore sights

Hard vulcanized ebonite rod that takes on a strong negative charge when rubbed with fur

Battery Box, Model C Capacity_50mL Shows oxygenated and deoxygenated bloodUsed to enclose dry cells safely for student built circuits, this battery box adds insulated terminals and prevents short circuits from rolling cells touching exposed lab metalwork.