CO2 To the Rescue Lab Activity kit, to invent a small device that could rescue a cell phone that accidentally falls into water, Students conduct a pair of chemical reactions to determine which of two acids react with baking soda to produce the most CO2 gas
Cartesian Diver Only - 4 cm WL 1040, Ideal for Showing Archimedes Principle, with a hollow glass diver, shaped like a diver, with a 10in x 1 1/2in glass cylinder, a rubber sheet and rubber band, Fill the cylinder with water, drop in the diver it floats
Harbottle, teaching tool for introducing pressure and discussing its applications, such as vacuum cleaners, flight, pumps, weather, and even how we breathe, balloon and a bottle, Measures 5In in diameter. Grades 5 and up
Bourdon Gauge, Circular Gauge Of Dia. 100mm, Dial Reads 0-2.5Kg/Cm2, Circular Gauge Having Overall Dia. Of 100 mm And A Depth Of 40 mm The Dial Reads 0-2.5 Kg/Cm2 Dia About 100 mm. An Actual Working Gauge Is Mounted In Our Specially Designed Transparent Polycarbonate Case
Jolly bulb metal - superior, Palm-sized, hollow metallic ball with a manometer connected to it for demonstrating change of pressure in a closed volume of air when heated or cooled, 80 mm diameter