L & R Quantrex Q90 Ultrasonic with Timer & Heater 2 Quart The Quantrex 90 is a compact and powerful ultrasonic cleaner. Its size makes it ideal for a workbench or confined area. The Q90 is available with or without a heater. Constructed of stainless steel, the Quantrex 90 is compact, reliable, and powerful. The 43kHz cleaning frequency will handle all your cleaning needs and applications. The Q90 comes standard with a 60-minute timer. Perfect for dental labs, a jewelers bench, or many industrial tasks, the Quantrex 90 will handle your toughest cleaning needs. Designed and Manufactured in the USA. 30 month warranty offers years of dependable, worry-free cleaning Optional heater heats solution to 145°F to assist in breaking down waxes, oils, and baked-on debris and soils A variety of accessories are available including accessory baskets.