Giant Weather Balloon White For Meteorological Investigation Holiday Party Decoration Entertainment Toys (72 Inch)

Hwoyee professional huge balloon,For meteorological purposes, the Suggested Inflation Volume of a 100g balloon is 0.15-0.2m ³, Net Lifting Force=160g, Total Lifting Force=510g, Bursting Altitude=15000 m/49000 feet. Natural color close to white ,Neck Length≥8cm,Neck Diameter≤4.5cm,Body Length=75～85cm. Ideal for fairs aerial photos,meteorologists, science projects and grand openings. If you are using it for other purposes, you can charge more helium or hydrogen gas to achieve greater lift near the ground. These balloons must be filled with helium if they want to float up. You need to buy helium locally or fill it with hydrogen in a laboratory to ensure safety (dangerous, not recommended for ordinary people). When performing inflation operations, it is necessary to ensure that there are no sand or any other sharp objects around., Manufacturer: Hwoyee