Part 6/9:
The experimenter mentions that these cylinders are available for purchase on eBay, with a variety of sizes and configurations. Some are made by scientists in Germany, featuring formulated exotic materials designed for high activity levels. The sale prices are modest for such specialized components—around $1,000 each—which is reasonable given the advanced nature of the materials.
He notes that some cylinders sold are "active" while others are less so, characterizing the activity level based on responsiveness observed during testing. The cylinders are encased in protective coatings, and serial numbers indicate their manufactured origin and composition.