Temperature of maximal cavitation intensity of glycol ethers in ultrasonic cleaning

Ultrasonic cavitation intensity in six glycol ethers (and as reference—in tetrachloroethylene) was measured in two ultrasonic cleaners of different rated power and operating at about 40 kHz. Cavitation was measured in ca. 20 dm³ volumes of liquid at 8 different levels, every 4 mm. For each liquid the temperature of maximal cavitation intensity was looked for. It was found out that not only the cavitation intensity but also the temperature of maximal cavitation in glycol ethers depend to a high degree on the level of liquid.