Not sure what you need...if you are used to the refrigerant gases, you should be also familiar how to handle them?
Just google any of the type gases and you will come up with all you could ever want to know.
2016 Tiffin 40 QBH
2015 38RSSA, traded
2005 TK3 #1869, 10 yrs of memories,
2017 F450 KR--one more Ford is it
2009 F450 4x4-died; 2010 F450-retired