Description

These 1" long, 0.25" thick clear, colorless spikes are made from a super-absorbent, polyacrylamide polymer similar to our Water Gel Crystals. When placed in water they expand to several inches with a corresponding gain in mass as they absorb water. They are great for quantitative measuring experiments. Reusable, Water Gel Spikes are made from a cross-linked polymer and stand up to student use. (10 spikes per package.)