Originally Posted by Daldaen (Post 2183117)

Because of the vendors they are sold by.

Here is the EQLive list:

http://www.eqtraders.com/items/show_item.php?item=1618

All the "a spell research mule" NPC Vendors you see in classic city zones were added when they revamped the Research system in 2006 or so.

The 2 vendors in East Freeport you see selling them, are vendors added when Freeport was revamped for the Prophecy of Ro expansion, adding a huge number of TS Vendors.

The remaining NPCs are in Luclin zones (Bazaar, Sanctus, Katta, Shadow Haven, Fungus Grove) and Plane of Knowledge.

If you look at the wayback archive of this item: https://web.archive.org/web/20030814....php?item=1618
Again you will see the only vendors are in the Luclin zones and PoK that I listed above.

It was only purchase able in Luclin and PoP zones. Therefore it is only a Luclin/PoP item.

Originally Posted by Ele (Post 2183119)

Earliest archive for the Celestial Solvent item page only shows Luclin vendors.
https://web.archive.org/web/20031011....php?item=1618

Celestial Solvent listed under Make Poison on EQTraders, only available from Luclin vendors.
https://web.archive.org/web/20020811...ion/poison.htm

Snapshots before August 2002 (Luclin era) do not include any of the combines related to Celestial Solvents.
https://web.archive.org/web/20020802...g_halfling.htm

edit: damnit Daldaen swooped in and classicPK'd me