Vacuum Pump with 200mm Pump Plate Base Shape_Rectangular 5-inch funnel during gravity filtration

5-inch funnel during gravity filtration in chemistry classrooms

Built for amphibian development study

well-suited for water-displacement and calorimetry work with an included inquiry-based instruction manual

the wider face brightening divergence demos while still producing reduced upright virtual images

sized for low-current circuit work below the 1A range where finer resolution matters more than full-scale capacity

Vacuum Pump with 200mm Pump Plate Base Shape_Rectangular 5-inch funnel during gravity filtrationHand operated vacuum pump with a 200mm copper pump plate and rubber seal, a battery free source of partial vacuum for bell jar demonstrations without external power.