1. Serial Dilutions Example!

2. Make a 0.2-g/mL NaCl STOCK solution
- Add 2 g of sodium chloride to beaker and add distilled water to 10 mL
0.2 g/mL NaCl
Stock Solution

3. Get as many test tubes (minus two) as you have Petri dishes for your experiment

4. Add 5 mL of distilled water to each of you test tubes

5. Add 5 mL of Stock Solution to first test tube.

6. Mix the first Tube
0.1 g/mL NaCl

7. Take 5 mL of first tube and add to second tube

8. Mix
0.1 g/mL NaCl
0.05 g/mL NaCl

9. Repeat and remove 5 ml from last tube and discard
0.1 g/mL NaCl
0.05 g/mL NaCl
0.025 g/mL NaCl
g/mL NaCl
g/mL NaCl
g/mL NaCl
g/mL NaCl