Product Number: SB43580
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Grades 6-12. Make your own foam. When two viscous liquids are mixed together, they initiate a reaction producing light weight polyurethane foam, which expands 30 times the original volume of the two liquids. Includes 500 ml of Polyurethane Foam System, Part A (Mixture - Polyfunction of Isocyanates) and 500 ml of Polyurethane Foam System, Part B (Mixture - Dichlorofluoroethane).