303-1 Convection Apparatus For Gases

product Overview:

Reveal the flow of convection currents in gases! The box has a glass front and two chimneys. Place a lighted candle under one chimney, then use the touch paper to introduce smoke over the other chimney to reveal the flow of convection. Includes instructions, smoke paper and candle; 8-1/2" x 3-1/4" x 3-1/2"; 1.75 lb


We have 70 skillful operators, 5 machine mechanics and 31 quality inspectors, total annual output capacity in design can reach 130 millions sets.



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