Yesenia has designed an experiment to demonstrate the volume of air contained by a fully inflated, standard 260 entertainer balloon, in relationship to a round balloon. First, she uses a foot pump to fully inflate a clear 260. She closes the inflation valve, and then opens a valve leading to a clear 9" round balloon from Qualatex. The much greater pressure in the 260 the round balloon to inflate quickly, and for good measure, she squeezes all of the remaining air into the round balloon, and closes off the valve. Then, for the sake of comparison, she takes another clear 9" round, takes a dee...

Yesenia has designed an experiment to demonstrate the volume of air contained by a fully inflated, standard 260 entertainer balloon, in relationship to a round balloon. First, she uses a foot pump to fully inflate a clear 260. She closes the inflation valve, and then opens a valve leading to a clear 9" round balloon from Qualatex. The much greater pressure in the 260 the round balloon to inflate quickly, and for good measure, she squeezes all of the remaining air into the round balloon, and closes off the valve. Then, for the sake of comparison, she takes another clear 9" round, takes a deep breath, and blows a full breath into it - inflating it noticeably larger than the one inflated by the 260. To confirm the result, she blows another breath into another fresh 9" round, and achieves a slightly larger size, thus proving that she is more than capable of filling a 260 in one breath, insofar as lung capacity is concerned. Of course, the question then arises - can she develop enough pressure to blow a 260? That is a question we will tackle in a future clip!