RJL Systems, Inc products

The Quantum Legacy by RJL Systems delivers reliable, whole-body body composition analysis using time-tested bioelectrical impedance analysis (BIA) technology. Designed for professionals seeking a cost-effective and dependable solution, the Legacy provides accurate measurements of fat mass, lean mass, and body water—essential data for health assessments, wellness programs, and clinical research.

The Quantum IV is RJL Systems’ flagship bioelectrical impedance analyzer—representing over 30 years of innovation and refinement in body composition technology. Engineered for accuracy and built for durability, the Quantum IV is a trusted standard for whole-body composition analysis across clinical, wellness, and performance settings.

The Quantum VII Biological Impedance Analyzer (BIA) is a portable, hand-held device designed for highly accurate, real-time body composition analysis. By continuously measuring true biological resistance and reactance properties, it provides healthcare professionals and researchers with precise, reliable data for both short- and long-term studies. 

Advanced regional analysis. Unmatched clinical insight. The Segmental Quantum V from RJL Systems delivers next-generation segmental body composition analysis with clinical precision and speed. Using a patented 8-lead, 12-channel multiplexer, it measures resistance and reactance across 13 specific regions of the body—including each arm, leg, and both sides of the torso—within seconds.