Profile: L&R Manufacturing Company provides ultrasonic cleaning systems. Our Quantrex line offers increased power for greater cavitation and is backed by a comprehensive warranty. The standard features include a stainless steel cover, automatic tuning and a pilot light. Our SweepZone® technology uses smart circuit, a custom-engineered electronic component that creates constant power output (CPO) for consistent, uniform cleaning. This technology incorporates pulse width modulation (PWM), which enables our sweepzone ultrasonic cleaning systems to sense cleaning loads, solution level and voltage fluctuations. Our sweepzone cleaning systems automatically adjusts to different conditions to create uniform cleaning power eliminating hot spots and weak areas.