The video shows a close-up of a hand holding three test tubes filled with colored liquids. The test tubes are being held over a color chart that has different colored squares with numbers indicating the pH level. The hand is comparing the colors of the liquids to the chart to determine the pH level of each liquid. The colors of the liquids range from yellow to green to blue. The chart has a title that reads "API: FRESHWATER MASTER TEST KIT" and includes categories such as "PH," "AMMONIA," and "NITRATE."