When inflating a Single Bubble Balloon with helium, it is important to use the right nozzle to get the best results and float time. Only use latex regulators (rubber tip) on Single Bubble Balloons. Do not use a foil auto shut-off regulator (brass tip). If it is used, the foil regulator will shut off before it's completely inflated.
A Single Bubble Balloon requires a lot of pressure to inflate. If the Bubble Balloon is inflated with a brass-regulated inflator, it will stop before the balloon is fully inflated and the Bubble Balloon will look like a foil balloon. Use the rubber latex regulator and be careful not to damage the valve when inflating the Bubble Balloon. This will ensure the right pressure for a full and shiny balloon.