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PHYSICS>>     Products     >> PHYSICS ............................................................   >> CHEMISTRY ............................................................   >> BIOLOGY ............................................................   >> BIOLOGY MODELS ............................................................   >> MICROSCOPES ............................................................   >> PLASTIC LABWARE ............................................................   >> GLASS LABWARE ............................................................   >> PORCELAIN WARE ............................................................     >> LABORATORY EQUIPMENTS ............................................................   >> LABORATORY HARDWARE ............................................................   >> EDUCATIONAL INSTRUMENT ............................................................   >>LABORATORY CHEMICALS QUALITY POLICY MANUFACTURING FACILITIES SOLIDS LABEL SPECIMEN HAZARD SYMBOLS QUALITY ASSURANCE SOLVENTS ............................................................       Cat. No. DSS/PH/081 DESCO CONVECTION OF GAS APPARATUS This is an excellent product for studying the movement of currents in the air. The box has a glass front and two glass chimneys. A lit candle is placed inside the box under one of the chimneys. Smoke is introduced in the other chimney and observed traveling down into the box and back out through the opposite chimney.

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