Making a Dilution series

Aim:
I want to investigate how make a dilution series

Equipment:
Test Tube Rack
Test Tubes
10mL measuring cylinder

Method:

Fill measuring cylinder with 10mL of water
Add 10mL of water to a test tube
Add 5mL of water to 5 more tests tube
Add a small spatulaful of Potassium Permanganate to the first 10mL test tube of water
Add 5mL of the dark purple Potassium Permanganate into the second test tube
Add 5mL of the second tube into the third test tube.

Add 5mL of the third test tube into the fourth test tube.

Add 5mL of the fourth test tube into the fifth test tube.

Add 5mL of the fifth test tube into the sixth test tube.

Results:

Discussion:

The first test tube went a dark purple colour.

As we poured 5mL from each test tube into the next test tube, the colour lightened each time.

I learnt that The test tube with the darkest colour has the most  Potassium Permanganate in it.