Which Brand Of Paper Towel Is The Strongest Which Papet Towel Is The Strongest?

Which papet towel is the strongest? - which brand of paper towel is the strongest

I'm doing a science project, in which paper towel is strongest. And when I tested if a certain weight in the paper towel if you want to be able to stand or rip.Can help, how to proceed. I have five different brands or paper towels and I am five trials for each napkin.