LAB TIPS :
1. Use a clean beaker! You do not want
2. RINSE the tubing before placing it into the beaker or there will be contamination. You do not want any starch on the outside of the tube.
3. Put about 20 drops of iodine into the beaker. ( not 50 mL!)
4. Dialysis tubing may be used instead of a baggy. A clean glass rod can be used to open up the tubing after the tubing is wetted.