I'm sorry but acid does (well should) = LSD. Acid is a nickname for LSD just like 'Lucy' or 'L' etc. just like 'mandy' 'molly' 'ecstasy' are nicknames for MDMA. If you start using these nicknames to refer to other drugs you end up with the confusing and potentially dangerous situation that is currently happening in the MDMA market, and that is starting to happen in the LSD market that you are perpetuating. It's 'acid' because it's lysergic ACID diethylamide. It's bad harm reduction to perpetuate that acid by definition should refer to substances other than LSD, mistaken identity of drugs can hurt people and it lets dealers get away with selling sub par products
For OP, substances often sold as acid or LSD that aren't LSD are generally limited because for a substance to fit on a blotter it has to be active at a very low dose. The most common will be 25x-NBOMe and related compounds which I would avoid at all costs. Other than that it could be a DOx drug, which while potentially still dangerous are much safer than NBOMe drugs, though generally undesirable to someone who wanted LSD as they last more than 24 hours, or you could end up with a recent research lysergamide like AL-LAD, LSZ or 1P-LSD etc, these are presumably quite safe and will be the most similar in effect to LSD, but you're probably still better off with LSD. Get a test kit! You don't even need Ehrlichs, even Marquis will identify LSD.