Alchemy is a craft that primarily deals with potions, medicines, and enhanced weaponry. It is the largest of the crafts with over 350 different recipes and an enormous source of materials. The primary Alchemist's Guild is located in Bastok Mines and can be joined by talking to the Guildmaster Abd-al-Raziq (upper level, Alchemist's Guild, (L-7)). There is a smaller guild located in Aht Urhgan Whitegate.

You will need to speak to Abd-al-Raziq to advance in rank. He will request a test item. Trade it to him and he will grant you a new rank. You can take the test as soon as you acquire 8 skill points in your current ranking. (i.e. 8, 18, 28, 38, etc.)

Each guild has a Guildworker's Union Representative that will accept a certain item each day in exchange for "Guild Points". You may use these points to purchase special items and key item abilities. Speak to the Union Representative to sign a contract. You may only have a contract with one guild and signing a different contract will cause you to forfeit any guild points acquired from another guild. Additional points may be granted for high quality versions of the item. There is a limit to how many points you can acquire from a particular item.

The Guildworker's Union Representative for the Alchemist's Guild is:

Hewmewmew, Bastok Mines (K-7)