Experiment 1 (Temperature of detergent medium at start)

I've decided to change the independent variable of this experiment to "Temperature of detergent medium AT START" as I realised that it isn't possible to maintain the temperature of the set-ups for a period of approximately >12 hours.

Conducted on 23th - 24th June 2011
Start Time: 5pm (23-06-2011)
End Time: 9.35am (24-06-2011)

Steps:
1) Cut out 5 pieces of fabric (5cm x 5cm) from a piece of fabric.
2) Mix two teaspoons of ketchup with 1 teaspoon of soya sauce.
3) Place a drop of mixture onto each of the fabric piece.
4) Leave the fabric pieces aside for 3 hours to create a stain.
5) Boil around 250ml of water.
6) Leave around 6 ice-cubes aside to melt.
7) Pour 140ml of hot water into a container. Label this set-up, A. (80 degree celsius- Use lab thermometer to check the temperature)
8) Pour around 40ml of hot water and 100ml of tapwater into a container. Label this set-up, B. (50 degree celsius- Use lab thermometer to check the temperature)
9) Pour 140ml of tapwater into a container. Label this set-up, C. (25 degree celsius)
10) Pour around 120ml of melted ice-cubes and 20ml of tapwater into a container. Label this set-up, D. (5 degree celsius- Use lab thermometer to check the temperature)
11) Place 1/2 teaspoon of detergent into all 4 set-ups.
12) Stir each set-ups 5 times.
13) Place one piece of stained fabric into each of the set-ups. Leave the remaining fabric piece aside. This will act as the control of the experiment.

14) Leave the set-ups overnight.
15) Remove the 4 fabric pieces from the set-ups and observe the stains left on the fabric pieces. Use the control as a basis for comparison.

Results:

(With control as basis for comparison)

To measure the 'colour intensity' of the stain left, I've decided to use Photoshop's Colour Sample Tool to measure the saturation of each stain.