Zahur will also decant potions into 3-dose potions or 2-dose potions, through either talking with her or using right-click options. She will decant all potions in inventory, whether unnoted or noted, into the option the player chooses, minimising the number of vials used. (She will not decant potions into 4-dose potions; Bob Barter at the Grand Exchange instead does that.) Zahur does not charge any coins for decant potions but does charge coins per vial if extra vials are needed for the decanting. Example: A player asks Zahur to decant four 4-dose potions (16 doses total) into 3-dose potions. Zahur decants the potions into five 3-dose potions (15 doses) and one 1-dose potion (for 16 doses total). Two extra vials are required for this, so Zahur charges the player 2*current price of an empty vial for the decanting.
The player can also supply empty vials in inventory, unnoted or noted, if extra vials will be needed for the decanting. This allows the player to have the potions decanted without Zahur charging any fee. (Many players training Herblore prefer to pay Zahur for the extra vials rather than provide them, as this saves time having to acquire vials. Since vials cost 5 coins each, Zahur's fee of 8 coins per vial is not regarded as excessive.)
Players can have noted and unnoted potions and empty vials and Zahur will still decant all the potions and use the empty vials to the maximum extent she can.
It is strongly recommended to use noted potions (and note vials, if supplying them) for players who want to decant potions in quantity (more than about 20). This minimizes the number of runs the player must make between the bank and Zahur.
Zahur originally only cleaned herbs.
Later, when she began decanting potions, she only decanted unnoted potions to unnoted 3-dose potions, charging 50 coins per inventory converted (regardless of how many potions were in inventory). At the time, the player did not have to supply empty vials for the decanting, as Zahur's fee covered this service. Indeed, Zahur would not use a player's vials if a player brings some.
Players having Zahur decant unnoted potions had to make sure to have room in inventory for the potions generated this way, or Zahur would refuse to decant them. Even if you brought exactly 50 gold and 21 4-dose potions, she would not decant them into 28 3-dose potions, claiming there wasn't enough inventory room. Thus, the most effcient way to decant 4-dose potions into 3-doses was to alternate between taking 20 and 19 4-dose potions. Your gold pile occupied a space, giving you only 27 inventory spaces to deal with. Taking 20 4-dose potions would have her split them into 26 3-dose potions and 1 2-dose potion. For the next trip, you would take 19 4-dose potions with the 2-dose still in your inventory and they would be split into 26 3-dose potions. This was the most efficient way for your money and time until she started to take noted potions.
- Before the 2007 herbal update, herbs were unidentified herbs, or "unids". Players with the proper Herblore level would be able to identify herbs. Higher level herbs would remain unidentified herbs. Zahur could identify a player's higher level unids for 200 coins each.
- Zahur's herb-cleaning ability is seldom used, because a player who can use any herb in a potion already has the ability to clean it, for free. If the player can't clean the herb, there is still no reason to pay to have it clean. It can remain in bank until the player has the level to clean it. If the player intends to sell the herb, grimy herbs can be sold on the Grand Exchange as well as clean ones.
- Bob Barter does the opposite of Zahur and will combine any 3-dose, 2-dose and 1-dose potions in your inventory into vials containing 4 doses.
- The update in which she was released referred to her several times as "he", when she is actually a female. Also, the RuneScape Game Guide (aka Knowledge Base) refers to Zahur as "he", see http://www.runescape.com/kbase/guid/herblore_extra_features.
- Although her examine says she sells herbs, she actually cleans them.