Adrien followed Val to the table on the opposite wall, which had been covered in all sorts of strange instruments. Val moved one of them forward. This machine looked like something in between a scale and a gyroscope, with a flat surface on which to place the potion surrounded by all sorts of crescent-shaped metal parts; its base was covered with a series of indicators and gauges. Adrien had seen this kind of machine before in stores, but he had never seen one in action before. This particular machine had a power cord; Val plugged it into the wall, set the flask onto the surface of the potion tester, and pressed a button to turn it on. A red indicator light started to blink; with a low hum, the machinery began to spin slowly around the potion. Val waited until the light stopped blinking, then he flipped another switch. The revolving parts picked up speed, their buzzing rising in pitch as their orbits turned into a blur. Adrien watched, mesmerized; the frantic spinning lasted only a few seconds, then it slowed down to a stop. The machine printed out a small piece of paper, which Val pulled out and showed to Adrien: