The firsthand how selective permeability allows some substances to pass through a membrane, while others cannot observe diffusion through a membrane in two directions at the same time. Easy to follow experiments outlined in detail. Processes are clearly demonstrated using simple color changes. Reagent bottles are unbreakable, spillproof and drop-controlled.

Includes:

• 30 semi-permeable membranes.

• Two bottles each of glucose solution and liquid starch.

• 60 glucose testing strips.

• 30 containers.

• 30 individual worksheets and guides.