Defence flask

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For the vial version, see Defence potion.
Defence flask detail.png

A Defence flask is a potion flask originally containing six doses of Defence potion. It is created by using six doses of defence potion on a potion flask. Drinking a dose will temporarily raise the player's Defence level by 3 + 10% of the player's defence level (rounded down).

The flask is made by blowing robust glass, requiring 89 Crafting and giving 100 experience. Red sandstone can be mined at Oo'glog and Sophanem and smelted using the robust glass machine located in Oo'glog and Prifddinas.

To decant the potion into the flask, one must have at least 6 doses of defence potion in their inventory, as well as one or more potion flasks. Using the flask on the potion will open a menu to decant them. The optimal inventory setup for decanting potions is 17 4-dose potions and 11 flasks.

Only the original, six-dose flask is tradeable on the Grand Exchange. All other doses can only be traded player-to-player. Once the potion has been partially drunk, no more doses can be added to it. After all six doses have been consumed, the flask will shatter and disappear. Flasks can be combined together, but the empty flasks will still be destroyed afterwards.

If the full, 6-dosed version of this potion is consumed, each dose would cost about 1850.8 coins.

Disassembly[edit | edit source]