what are you looking to make? Oral solutions for both dbol and clen, and an injectible sust?
Clen is very tricky stuff.. be careful. one grain of clen on your finger could end up with you having a heart attack if you accidently lick it or breath a mistaken dust cloud in.. I'm sure your careful, but I'm just saying.. mcg's is a very small amount of stuff.
You'll need a .01 accurate scale and you'll need to make alot more then you'll ever need for yourself to make a safe and accurate batch of concentrate that you can then use to make single bottles of what one might see on the research sites.
clen is also light and oxygen sensitive.. ONce a factory package is opened it's often only good for days.. unless worked with and treated just right.. even then after month in any condition it will likely be NGF. Once in solution, it's fine for years.
If your clen goes bad it will be off white in shades of yellow, an will likely have some hardened chunks of slightly darker yellow. Good clen should be quite white.
Or so I was told.