My Method

Testing for Chlorine: Using the ‘Magnor’ Test Kit

1. Fill the CL test tube with one of the different waters.

2. Add one DPD tablet to the test tube. Avoid touching the tablet.

3. Place cap on tube and shake to mix contents.

4. Compare tube colour with chlorine colour scale.

5. Once recorded results, clean tube and test other water samples.

Testing for pH: Using the ‘Magnor’ Test Kit

1. Fill pH test tube with one of the different testing waters.

2. Put 5 drops of Phenol Red soloution into test tube.

3. Place cap on tube and shake to mix contents.

4. Compare tube colour with pH colour scale.

Once recorded results, clean tube and test other water samples.

Testing for bacteria:

Making the Potassium Hydroxide mixture:

Mix up Potassium Hydroxide tablets with 50mLs of water.

Shake Potassium Hydroxide mixture.

Making the bubbles for the vials:

Mix 5-10 drops of food colouring with a little water in a glass or mug. The amount of water will not affect the experiment.

Using vials, release a small amount of water/food colouring into each vial, making a bubble.

Preparing the 60mL syringes:

Put 200mLs of each test water into each container.

Mix 1 gram of sugar with each water and stir.

Then take 1 mL of each water and squirt it in each syringe.

Then put one cotton ball in each syringe.

Then dip the three remaining cotton balls in the Potassium Hydroxide mixture.

Put one Potassium Hydroxide dipped cotton ball in each syringe.