Alcohol (Component of Polly's Solvent Mixture)

The bottles collected by Polly represent the initial, discarded idea for delivering the solvent. Though Ben suggests using them to throw the mixture, he quickly dismisses this in favor of fire extinguishers. Their presence in the scene underscores the improvisational nature of the companions’ plan, as they scavenge whatever is available. The bottles symbolize the raw materials of rebellion—ordinary objects repurposed for extraordinary ends—before being superseded by a more effective solution.

The alcohol is one of the five solvents Polly and Ben identify in the moonbase sickbay, selected for its corrosive properties to dissolve the Cybermen's organic components. Ben and Polly pour it into the fire extinguisher alongside benzene, ether, acetone, and epoxy-propane, creating the 'Polly cocktail.' The alcohol's volatility adds to the weapon's destructive potential, making it a critical ingredient in their improvised defense. Its inclusion highlights the group's willingness to use any available resource, no matter how dangerous, to survive the Cybermen threat.

The alcohol in the 'Polly cocktail' serves as a stabilizing agent, balancing the more volatile components like benzene and ether. Polly lists it alongside acetone and epoxy-propane, indicating its carefully calibrated role in the mixture. While not as corrosive as acetone, its inclusion is critical: it ensures the solvent doesn’t degrade too quickly or react unpredictably when sprayed. The alcohol’s presence underscores the scientific rigor behind Polly’s improvisation—a deliberate, methodical approach that contrasts with Ben’s more instinctive, hands-on style. The object’s involvement is subtle but essential, much like Polly’s own role in the team: often overlooked, but indispensable.