properties of paper towels::In almost every shop there are many brands of paper towel, each claiming to be the best, the most absorbent or the cheapest properties of paper towels

properties of paper towels::In almost every shop there are many brands of paper towel, each claiming to be the best, the most absorbent or the cheapest.
How do we prove or disprove these claims?
How do we work out which towels are truly great and which are almost entirely useless?
We have all seen adverts where somebody compares two brands by sucking up some blue liquid or by wiping up some muddy footprints from their kitchen floor.
Here we are going to show you how to to test one of these claims, the absorbency of paper towels.
Paper towels were invented by arthur scott in philadelphia, usa, in around 1900 and from humble beginnings have become a billion dollar industry.
Fold and insert into the water.
As you dip the towel into the water, start your stopwatch.
After 20 seconds, remove the towel from the beaker and squeeze as much water as you can out of the towel in to the graduated cylinder using the funnel.
Make a note of the volume extracted repeat 5 times for each brand and note the results in your data table.
You must make sure that each sheet is folded in exactly the same way for the experiment to be constant and correct.
Write down the results for each brand in your notebook.
Work out an average for each result and write down in a table.
Plot all of your results onto a simple bar graph like the one below; you can do this on a computer or you can use graph paper and pencils.
This will allow you to show which brand is the most absorbent and which is truly awful.
Of course, this is a very simple experiment and it does have some limitations; you are testing only one reason why people choose a certain brand.
Some brands might be excellent at soaking up spills but are very expensive.
Maybe some brands are not as good at soaking up water but are better at soaking up other liquids like milk or cooking oil.
When a consumer buys paper towels, they are not just looking for absorbency.
Price, softness, availability, number of sheets on a roll, and strength are all important factors when buying a roll of kitchen towel.
Perhaps you could to rate the strength and softness, or try and calculate how much each towel costs per sheet.
Paper towel manufacturers spend millions of dollars every year but, with a few simple experiments, you can find out which brands truly are the best.
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