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Scales, Tales, and Magical Potions
EcoVivarium
Educreate
San Diego County Regional Airport Authority
Earth Discovery Institute
Gastec International Corporation
Live demonstration of the Gastec Gas Detector Tube System consisting of a handheld non-electric Gas Sampling Pump and Detector Tubes (for up to 350 different substances) containing non-hazardous reagents in which there will be a chemical reaction resulting in a color change and thereby able to determine what's in the air. There is also a children's version available for educational purposes.