Object
Doctor's Portable Sulfur Collection Bottle
Portable glass bottle carried by the Doctor outside the TARDIS, used for field sample collection (sulfur deposits) to synthesize hydrogen telluride, distinct from his laboratory glassware.
2 appearances
Purpose
Collect sulfur samples for synthesizing hydrogen telluride to attack Kroton tellurium-based physiology
Significance
Pivots the group's strategy from evasion to chemical assault, highlighting the Doctor's scientific edge while Zoe's unease flags surveillance risks
Appearances in the Narrative
When this object appears and how it's used