Thread: SparkChambers
View Single Post
Old 18th Apr 2019, 8:54 am   #10
Paul JD
Pentode
 
Join Date: Oct 2018
Location: Coventry, West Midlands, UK.
Posts: 220
Default Re: SparkChambers
Quote:
Originally Posted by Viewmaster View Post
I believe that most used for balloons does contain some air.
BOC list their balloon gas as 97% He, 3% air.
Paul JD is offline