Chapter 267

Just as Zhao Yi had anticipated, the penicillin was successfully filtered today. He stored the filtered penicillin in a glass vial that had been sterilized with high-proof spirits. Then, Zhao Yi checked the makeshift syringe he had prepared while waiting for the penicillin to brew. Syringes did not exist in ancient times, so Zhao Yi had to find some very fine goose quills and carve them into the shape of needles. He had also spent some money to purchase tubular glass pipes to serve as the syringe barrels. Finally, he fashioned a piston mechanism, completing his primitive syringe. During this process, Zhao Yi truly understood what it meant to be unable to make bricks without straw. The lack of many materials gave him pause; it seemed that developing glass production and improving iron smelting techniques were indispensable. Raw materials would also need to be sourced. Just thinking about it made it seem like a monumental task.