Innovating Science Polyurethane Foam Demonstration Kit allows you to crate fixed polyurethane foam by reacting polyethers with a di-isocyanate in the presence of a catalyst while polyurethanes are thermoplastic polymers formed by the condensation of a polyisocyanate and a hydroxyl containing material. Includes instructions along with two solutions necessary to perform the demonstration and requires approximately 30 min. Kit Includes:1 x 500mL Polyurethane Foam System Part A (Mixture)1 x 500mL Polyurethane Foam System Part B (Mixture)