Materials
- Sodium Phosphate Buffer, pH 6.0, 50 mL
- Bogen Universal Indicator, 15 mL
- Chart, Bogen Universal Indicator
- Air Line Tubing, 18"
- 10 Foam Cups
- pH Paper Hydrochloric Acid, 1 M, 15 mL
- Sodium Hydroxide, 1 M, 20 mL
- 15 Culture Tubes, Polystyrene, 17 × 100 mm
- Test Tube Rack