T Nation

Micron filters

This might be a dumb question but it wont be the first. what kind of micron filters does one need for brovel products? Does the pharmacist know already or are there different types and sizes of micron filters TIA

Submicron filters are of use against bacteria
or small particulate matter, but not against
dissolved chemical impurities or exceedingly
fine particulate matter. I don’t know
that they’d be of any use for lower quality
steroids such as Brovel, because the problem
is probably not either of the above, but
it couldn’t hurt (though it is rather impractical.)

0.45 micron is typical but it is quite hard
to push oil through such a filter. Much
larger than this, and you’ll let bacteria
through.