Quantum III – Body Composition Analyzer

  1. Description
  2. Documents
  3. Purchase
  4. FAQ


Product Overview – The Quantum III is used to assess human body composition from whole-body measurements. Self-contained and portable, the Quantum III was designed to give the user a variety of technical options as to how data is recorded, stored, viewed and printed.

Product Features – This compact, self-contained and portable Quantum device measures and records BIA data. It does not require a PC to record and store information – dozens of time-stamped records can be stored in its internal memory. The large keypad makes it easy to enter subject information and create a complete body composition record and report. The internal NiMH batteries last for approximately 3 hours of continuous use, and can be safely fully recharged within a few hours.

The user has two options to print body composition reports: 1) the portable thermal printer or 2) a wireless radio frequency link for printing graphic reports on a PC within a 300 ft. range. The wireless link complies with most worldwide regulatory standards.

BC Software – Human body composition data can also be saved in the BC Software database on a PC for further analysis and historical tracking of individuals. The Quantum III is extremely accurate and fast – it can perform a complete body composition analysis and generate a printout or send data to a PC in a matter of minutes.

Documents that Apply to All Analyzers: Documents for the Quantum-III: Documents that Apply to All Software:

Purchase a Quantum-III

(Analyzer prices include software, subject cables, and an initial supply of electrodes)
Item# Name  
Q3 Quantum-III This product has been discontinued.

Take advantage of our Referral Program.
You can also get a discount on a new analyzer by trading in your old one.*
* Conditions apply


Item# Description Price  

Purchase Additional Accessories & Supplies

Subject Cables

SC6PIN6 6-pin Subject Cables -- $75.00
(For all Quantum III, IV, and Quantum V analyzers, and Quantum-II and -X analyzers sold after May 1, 2009)

Other Accessories

Item# Description Price  
TEST Test Resistor


PAPER Thermal Printer Paper
Fits the following printers:
  • Citizen PD-24
  • Seiko DPU-414

Purchase an Extended Warranty

RJL Systems includes a warranty with every instrument sold. To continue warranty coverage beyond the original warranty period, you will need to purchase an extended warranty. Extended warranties are only offered on models of analyzers in our current product line, and cannot be ordered for any discontinued analyzer.


How will I know if my RJL analyzer is operating correctly (calibrated)?

A 500-ohm resistor is included with all the RJL analyzers. This resistor allows you to check the calibration of the analyzer. For an explanation on how to test the calibration of your unit, please refer to the manual.

Is there any chance of electrical shock while operating the RJL analyzers?

No, all of the RJL analyzers are designed with isolation transformers that prevent any harmful current from being exposed to the subject while being tested.

Will climate affect the BIA test?

Yes, but only when climate changes are extreme.

Is the RJL equipment FDA approved?

The Food and Drug Administration regulates all BIA devices as class II medical devices. Manufacturers must receive clearance from the FDA to market a class II device. Please visit the FDA website for more information on RJL registration and clearances. ( FDA Website – search for RJL Systems under Applicant Name or Owner Name.)

What is the life expectancy of an RJL analyzer?

So long as you take care of your analyzer, it can last a long time. RJL has many of their customers (from as far back as 1980) using their originally purchased analyzers.

Are the RJL analyzers very difficult to operate?

No, anyone can operate the RJL analyzers. It is helpful, however, to read the supplied manuals first.

In addition, anyone planning on using an analyzer in a clinical setting should practice applying the electrodes and collecting the resistance and reactance values to ensure that they are able to reliably and repeatably place the electrodes in the same spots on the skin every time.