Torch (alchemical)
Type
Cost
25 gp
Weight
1 lb
The rough, sticky tar at the end of this torch burns through even the most adverse conditions. An alchemical torch burns for 1 hour even in heavy rains, strong winds, and underwater (albeit poorly when submerged, shedding only dim light in a 5-foot radius). Dimmer than a normal torch, it sheds bright light in a 10-foot radius and dim light for an additional 10 feet.
Source