To find out which are effective, or which is most affective, I will place the piece of cotton in front of a light sensor and place a light bulb a certain distance from the light sensor. I will then record how much light is being let through the inky cotton. I will do this before washed, and after washed with each piece of inky cotton. The piece of cotton which lets through the most light after the experiments have been carried out, will obviously be the best type of powder to use, but hopefully both types of washing powder are very effective.
To make it a fair test, I will make sure I only change the temperature of the water in the beakers. On each piece of cotton I put 3 drops of ink. I used clean water in every beaker. I used Exactly 150ml of water in the beakers. When I used washing detergent, measured out 4 spoonfuls and made sure that they weighted the same. When I recorded the amounts of light, the light bulb distance never changed, and I always held the piece of cotton 1cm from the sensor. Each time, I stirred with the same glass rod and for exactly 2 minutes. Nothing changed but the temperature.
I predict that from looking through the information about washing powders that non-biological washing detergent will be better, and work best at a high temperature.
*In the table, the parts of the sum are – using only one sum as an example –
35 = The Distance of Light Source From Sensor
20 = The Amount Of Light Being Let Through
15 = The Distance – The Amount. The Answer means the lower the amount of light through, the better the test has worked.
In my prediction I said that Non-bio would be best, let the most light through and be best at a high temperature.
The piece of cotton that was put through non-biological washing powder, let through the most light after being washed. It actually worked best at a lower temperature. This is best because washing machines can’t wash clothes at extremely high temperatures. Obviously all the ink didn’t come out but most did and that’s pretty good for a little powder in a glass beaker stirred for 2 minutes with a glass rod. A washing machine is so much more high-tec than that, so it will obviously get out all the ink.
After investigating, I say that whilst both washing powders are very good, non-biological are just that little bit better.
