A double thistle tube with a porous membrane is held upright with the membrane covered end in a jar of water. When a sugar solution is added to the top of the tube, the liquid will rise in the tube. This apparatus clearly displays the concept of osmosis.
- 1 Battery jar
- 1 Thistle tube with membrane
- 1 Stable support for the thistle tube
WARNING: This product can expose you to chemicals including lead, nickel, and arsenic, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Our products are not toys. Use in a laboratory or educational setting only. Not for children 13 and under.