Swell Polymer Rainbow Spheres- Science of Polymers Color:Clear which later became successful and

which later became successful and internationally known under the company Ernst Paul Lehmann Patentwerk after initial difficulties

Recommended age: +3 Year Wash: Surface wash Material: METAL/WOOD/RUBBER

Supervision is recommended at all times

you can run

INCLUDES: 5 pieces of medical equipment - including a stethoscope blood pressure monitor thermometer syringe reflex hammer and handy red soft cotton case

Swell Polymer Rainbow Spheres- Science of Polymers Color:Clear which later became successful andThese curious growing spheres are made from a chemical known as a super absorbent polymer (or SAP). SAPs are amazing materials. They are long chains of molecules that join together in a net like pattern. Water is pulled in through the holes of the net. then the molecule chains soak up tremendous amounts of water. When the molecules absorb water, they swell and soften and transform into a hydrogel water bead. Swell! All in a packed in a test tube and