OK I heres what I have. 9 are in test.. Depending on which supplier you take to get filled, they want either 5 year or 10 year dates. 10 year is CGA's guideline. some suppliers will only do 5 years on customer owned bottles.
I will send out the cylinders with the best dates first.
I do have 1 that is out of test. I will sell that one for $20 to help offset the cost of the hydro.