Final Experiment

Set-ups:

A- Low pH, Low concentration of detergent, Low Temperature

B- Low pH, Low concentration of detergent, High Temperature

C- Low pH, Recommended concentration of detergent, Low Temperature

D- Low pH, Recommended concentration of detergent, high Temperature

E- Low pH, High concentration of detergent, Low Temperature

F- Low pH, High concentration of detergent, High Temperature

G- Neutral pH, Low concentration of detergent, Low Temperature

H- Neutral pH, Low concentration of detergent, High Temperature

I- Neutral pH, Recommended concentration of detergent, Low Temperature

J- Neutral pH, Recommended concentration of detergent, High Temperature

K- Neutral pH, High concentration of detergent, Low Temperature

L- Neutral pH, High concentration of detergent, High Temperature

M- High pH, Low concentration of detergent, Low Temperature

N- High pH, Low concentration of detergent, High Temperature

O- High pH, Recommended concentration of detergent, Low Temperature

P- High pH, Recommended concentration of detergent, High Temperature

Q- High pH, High concentration of detergent, Low Temperature

R- High pH, High concentration of detergent, High Temperature

Control

For Low pH, 40ml of lemon juice was added along with 100ml of tapwater (either hot or cold, depending on set-up)

For Neutral pH, 140ml of tapwater was added (either hot or cold, depending on set-up)

For High pH, 3 teaspoon of baking soda was added along with 140ml of tapwater (either hot or cold, depending on set-up) and stirred to be dissolved.

For Low concentration of detergent, add 1/10 teaspoon of detergent.

For Recommended concentration of detergent, add 1/2 teaspoon of detergent.

For High concentration of detergent, add 3 teaspoons of detergent.

For High Temperature, pour around 40 ml of hot water into 100ml of tapwater (+ lemon juice if needed).

For Low Temperature, pour around 120ml of melted ice cubes and 20ml of tapwater (+ lemon juice if needed)

Steps:

1) Cut out 19 5cm x 5cm fabric pieces.

2) Mix ketchup and soya sauce in the ratio of 2: 1.

3) Place a drop of the mixture onto each of the fabric pieces.

4) Leave fabric pieces aside for 3 hours to create a stain.

5) Get ready all the set-ups. (Refer to list of set-ups above)

6) Place a piece of stained fabric onto each of the set-ups.

7) Leave set-ups overnight.

Results:

 A

B

 C

 D

 E

 F

 G

 H

 I

 J

 K

 L

 M

 N

 O

 P

 Q

 R