Description

When mixed with water, this
brightly colored, specially
treated “hydrophobic” sand
stays absolutely dry. Reach
into a beakerful of this sand
and water, and you’ll still pull
out a handful of dry sand! Not only is hydrophobic
sand fun to use, it’s educational too.
Kit comes with 1 lb. of sand in a plastic jar and a booklet
containing 7 experiments to demonstrate concepts of
the hydrophobic effect (felt by many scientists to be
essential to the formation of biological membranes),
surface tension, solubility, “nonsolvent” properties of
water, and reversed-phase liquid chromatography.