just for clarification...
the conversion for any PH powder is the same PROCESS as the aforementioned test conversion.
the only exception is suspensions which are a whole other ball of wax.
PH powders vary in solubility (for example, 1-test cyp is more soluble than 4-ad prop), but the process is the same. generally speaking, the longer the ester, the more soluble it is, and the more you can get in mg/ml.
if the powder is a base (4-ad base, etc.) then you are going to have to likely make s suspension. those are a bit different.
and don't even try making a solution or suspension of 40ht.
it's a waste of time