Polyurethane Foam kit, to explain how when two viscous liquids are mixed together, they initiate a reaction producing a light weight polyurethane foam, Includes: 1 x 500ml Polyurethane Foam System, Part A (Mixture), 1 x 500ml Polyurethane Foam System, Part B (Mixture)
Electrochemical Series, Includes:15 Copper Metal Strips, 15 Zinc Metal Strips, 15 Magnesium Metal Strips, 15 Iron Metal Strips, 15 Aluminum Metal Strips, 75 Filter Paper Strips