The video shows a person using a digital device to measure the pH level of a liquid in a glass container. The device is held in the person's hand and is inserted into the liquid. The person then adjusts the device to ensure accurate readings. The video provides a close-up view of the device and the liquid, allowing viewers to see the digital display and the color of the liquid. The person's hand movements are steady and precise, indicating their familiarity with the device and the process of measuring pH levels.