On the morning of April 19, he synthesized 0.5 milliliters of the compound, dissolved it in 10 cubic centimeters of water, and at 4:20 PM took 250 micrograms—0.000025 of a gram, the smallest dose he thought he might conceivably notice.
Synthesized 0.5mL? It’s not a liquid.
And 250 ug is 0.00025, they have an extra zero in there.
Do you think it's synthesized directly into blotter form?
It’s as if I said I had 0.5 mL of salt. It tells you nothing other than you have water with salt in it.
LSD is a solid, sure -- below 175 F. Then it's a liquid, but it decomposes into simpler molecules before it boils, so it doesn't really have a gaseous form at STP.
A more reasonable assumption is that it’s a saturated solution at NTP but that’s still quite an assumption.