div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imageimg data-url=documentmicrofoil-balloon-helium-chart-note-the-listed-microfoil-balloon-helium-charthtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: Microfoil Balloon Helium Chart NOTE: The listed …Microfoil Balloon Helium Chart NOTE: The listed average inflation sizes and numbers of balloons per helium tank are conservative loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader034fdocumentsinreader034viewer20220429205f665f5452f7b2207a176d54html5thumbnails1jpg width=140 height=200 divdiv