http://e5fc3et2gcsvmii4f6mrjgapd22azni6iu6pm54m44aewfmohvvnnpid.onion/faq
To describe it briefly, all you need to do is drop a 100ug tab into 10ml of distilled water or alcohol. Leave it for a day or so, in the dark.
Then, 1ml of the liquid will contain 10ug of LSD, and will provide you with a consistent microdose. You can store your liquid in the fridge and it should last for months.