Foil balloons will stay inflated with helium between 6-8 hours and 8-10 hours with air. -tie a curling ribbon below the valve of the foil balloon rather than above to prevent air or helium leakage. -confetti balloons will typically stay inflated between 10-12 hours with air or 8-10 hours with helium. -pump 10% of air then 90% of helium to keep confetti scattered and help extend floating time. -conduct static electricity by rubbing a soft cloth against balloon so the confetti clings to the balloon walls. -generally 12-inch latex balloons filled with helium will float between 6-10 hours. -balloons filled with air will stay inflated between 8-10 hours outdoors and 12-20 hours indoors. -for outdoor displays under-inflate the balloon by first over-inflating the balloons then releasing gass so the balloon can easily expand later to the weather. -helium is sensitive to temperature; weather will shrink balloons while heat will pop your balloons. -in preparation for a party test only one latex balloon the day before to monitor heat humidity or rain in your environment.
