We need mixture of gases in a 240 CFT cylinder.
In Karachi (Pakistan) on monthly basis.
Mixture ratio is:
5% Carbon dioxide
8. 5% Hydrogen
Balance Nitrogen
date_range Jan 10' 2022/ Belgium
date_range Jun 14' 2021/ Oman
date_range Jan 15' 2021/ Norway
date_range Sep 18' 2020/ Sri Lanka