- Use TesTab Dissolved Oxygen/BOD Kitinstead of lab protocol.
- Use a dissoved oxygen tank meter.
- Once samples are fixed, they can be stored in refrigerator for titration later.
- Expand study to include natural water bodies (lakes, ponds, etc.). Have students conduct a seasonal study of these water bodies.
Remember that science lab kits can be used to create a number of biology science fair projects.