sekio
Bluelight Crew
Whoops - I meant that in the sense of drug-using person with a productive career, not someone who does drugs for a living 

The other isomers and degradation products of LSD are not active. The crystal structure doesn't matter either, LSD tartrate dissolves readily in water, saliva etc no matter if it's crystallised from methanol or benzene.
Original Sandoz LSD was stored in solution made with distilled water in sealed brown glass ampules, likely purged under nitrogen or argon. These would last essentially indefinitely, because LSD needs light (blocked by the dark glass) to react with water and form lumi-LSD. So we can reasonably assume that recently made Sandoz LSD (when it was around) would not have degraded appreciably; much less so if it was distributed in dry tablets. Erowid reports that people opened and consumed some 55 year old Sandoz acid and it was just as potent as "fresh cooked" stuff.
There's just one thing that doesn't add up, why would people expect their acid to be "dirty". Most dealers peddle their wares as "good stuff" and not as "dirty shitty LSD that's gonna make you sick".
Not hypothetical for me, but sadly not surrounding LSD, but the 4-sub tryptamines...
I got a small bunch of these as samples about 3 years ago. I had the same dose of each (I won't go into TR detail), every Friday night for 4 or 5 weeks until I'd been through the set & was able to differentiate them. On one of these nights, I swallowed my usual dose at the usual time some hours after a meal, & began to feel quite unwell. Side effects seemed far greater than usual, I felt quessy & light headed & my stomach felt dreaful. About an hour into a pretty awkward trip (managed to harsh my gf with all my misery Lol) I cramped up & shot into the little room & enjoyed the pleasures of a violent evacuation. It was touch & go but I avoided vomitting too, but holding that together totally fucked up my trip (& hers). The squirts & the other ill effects gave me the impression that one of my 4-subs was either a dodgy synth or just one of the unusual compounds you come across that just does not agree with you.
Nontheless, for the sake of research, I banged the same dose on the Saturday night, the next day, & had a cracking fucking trip! The meal I'd eaten on the Friday afternoon, some hours before the trip had clearly upset my stomach. For the sake of detail it was a beef burger from Giraffe in Chiswick... Lol
So yeah, your hypothetical isn't exactly outlandish!
I can only speak for myself.
I have taken LSD two or three hundred times. I have usually been in circles that were well enough connected and I was trusted enough where I knew what kind of LSD it was. What crystal it came from. So the vast majority of the LSD I've ever taken I actually have a vague idea of the purity or at least what it's supposed purity was supposedly.
My experience has been that LSD from the same batch, or same crystal released that same season, pretty much always felt remarkably similar. Of course the trips were different if I was doing different things or thought about different topics... but the overall feel, push, and even visual nature of the drug was remarkably similar.
Variations from batch to batch I however found quite variable. There are a few times I wondered if I had perhaps taken another Lysergamide, but I have undoubtably never mistaken anything like DOx or nBOME or 5-meo-AMT or anything sold on blotter over the years as LSD. I have only ever had "legit" LSD; or, on rare occasion, blotters with no substance on them at all.
That said, I feel I am very sensitive to physical effects of psychedelics. LSD which I knew was fresh and pure felt fresh and pure. My friends also thought it felt fresh and pure. LSD that I knew was Tornado Juice felt crappy but still delivered a powerful mental trip.
The first underground LSD lab was run by two partners Bernard Roseman & Bernard Copely, arrested in 1962 although LSD production was still legal. The disturbing part about Rosemans account of this affair - in his book LSD - The Age of Mind - was his mention that the LSD turned into a blackish, slimey material. He tried it anyway & was impressed by the effects. So the two of them packaged it for sale. The purity of psychedelics on the black market has been an issue ever since
The 70's were the worst time for LSD misrepresentation. When LSD samples were tested 44% contained LSD with two or more contaminants resulting from incomplete or failed synthesis.
I wonder what contaminants as well. I asked in another thread but, no one answered. I am not familiar with the various synthesis in use but, I wondered can the effects of "dirty" LSD that I and others have experienced be caused by byproducts of synthesis? Not that anyone here would know the exact recipes people are using (other than obvious ones Tihkal etc.) As they are closely guarded and passed down by word of mouth. Regardless of if they are potent enough and active is low ug dosages. As even sub active doses can potentially play effect on the overall experience.I'm more of a cynic with this dirty acid thing & I go for the set/setting, all in the mind agle... But I'm also open to other possibilies...
I just stumbled on this in - Peter Stafford - Psychedelics - http://www.amazon.co.uk/Psychedelic...id=1374427850&sr=1-10&keywords=peter+stafford
Sounds to me like exactly the sort of thing that might bring untoward effects, if such things did/do actually exist...
Later -
What contaminants, I wonder?
it was from a respected vendor.
I wonder what contaminants as well. I asked in another thread but, no one answered. I am not familiar with the various synthesis in use but, I wondered can the effects of "dirty" LSD that I and others have experienced be caused by byproducts of synthesis?
Not that anyone here would know the exact recipes people are using (other than obvious ones Tihkal etc.) As they are closely guarded and passed down by word of mouth. Regardless of if they are potent enough and active is low ug dosages. As even sub active doses can potentially play effect on the overall experience.
As for black sludge I have seen it, as well as an array of colors and consistencies. I would not eat the sludge like LSD either time I have been around it. Once was black and another more of a earthy brown color. I do know of others who have used black sludge LSD due to its price and not many people enjoyed it due to side effects when trying it out. Not everyone knew/cared what quality or how it looked raw. Who knows why it came out that way during synthesis... new cooks?
I have read in the past about how LSD can take different forms of crystalization and have no effect on purity due to crystal polymorphism. ) Such as a dark crystaline structure being 90% pure as well as clear needle like structure.
Because the effects of psychedelics are variable! You were not the same person you were 4 weeks ago, and you doubled your dose. Why would you expect the same experience?