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The most comprehensive package of informaiton with calibrated Device. You have access to the entire spectrum of EAV since it all began in the US since 1979 with Voll's top student and protege.

What began as an 'acupuncture' system, has now developed into a comprehensive bedside diagnostic system for primary care practitioners.


Instrumentation Remains the Same

By Prof. [Dr. of Med.] Charles McWilliams, Nevis Island © 2017

For many years, I have been a student of Bedside Diagnosis and Clinical Medicine as part of general, medical practice. Living on an island where medical facilities are limited, the hallmark of effective practice remains knowing the signs and symptoms of disease. Unfortunately, this is no longer formally taught in medical schools, spoon-feeding medical students to rely on the laboratory and radiology. Often, common sense gets tossed under the bus, and along with it, good and affordable doctoring.

Aids to doctor diagnosis, that is instruments that confirm the clinical impressions upon presentation, are island life-savers. Fortunately, desktop, point-of-care meters for ‘finger-stick’ blood goodies, like sugar, cholesterol and uric acid are easy and cheap; and the old standard urinalysis machine for urine-stix are vital for fast renal screening. Visual inspection of blood and urine by-the-eye and microscopy will always be a handy companion for the anemias, infections, and kidney stones. Specialty work, like blood and urine microscopy, select urinalysis with ordinary lab chemicals, remains our reserve skills and tools when called for.

Suffice it to say, I have bought lots of expensive devices down through the years as an aid to diagnosis: microscopes, point-of-care blood analyzers, thermography machines, bioimpedance analyzers, etc. Nothing comes close to the utility and handiness of Electrodermal Screening. Dr. Voll bequeathed us with the system, and now, sixty years later, as I continue to make improvements on his system and methodology of point discovery. What he called as a misnomer – electroacupuncture – entails a simple topical measurement of the points on the skin. Each point is only measured from 5 to 30 seconds, and its conductance value is noted as either normal, inflammatory, or degenerative. Compared to the signs and symptoms, the anatomic and pathophysiologic points verify or negate clinical impressions, leading to a summative diagnosis once some simple lab values are compared with accompanying palpation and auscultation further. What this translates into is the fact that a lone practitioner, in the field or out on the ‘bush’, can effectively manage a primary care clinic with acceptable norms. In fact, I would argue in many cases even better than the newbie who must have labs and images.

Using hard clinical research, matching known and verified pathology (documents brought from patients as part of their visit) with careful measurement of the Chinese points, has led me to the discovery and confirmation of more than 100 new diagnostic points, in addition to another 300+ Dr. Voll left us with. Equally, some of Voll's original points were simply too general or non-specific, particularly his 'control' and 'summation' points of tissue systems and 'meridians'. They are no longer needed nor useful. Gone are the days of Control Measurement Point "CMP. Large Intestine," and Summation point "SMP. Endocrine Glands." Lol! Those were the medieval days of dark diagnosis, like painting a festering wound with mercurochrome and prescribing penicillin for STD's. Back in the 90s we had no way of verifying hypothyroidism, estrogen dominance, diabetes, and the emerging new age Syndrome X. Today with have the specific points.

Equally, I have made a considerable improvement on Voll's original dermatron machine. I have completely eliminated the notorious 'painful pressure' of the probe stylus upon the skin. That we abandoned long ago with integrated circuits. The technology obviously is light years away from the 1960's transistor based technology. I take note and compliments to this day, machines I produced in the 80s and 90s are still in use to this day, including my old salty dog biotron that by now is probably glued to the formica desktop in my chamber. I don't even turn it off, it floats 24/7.

Left: Voll Dermatron (vintage 1970s) / Right: mini-Biotron II (vintage 2000s)

However, what remains is the benefit and pleasure of the old analog meter, the d'Arsonval 100 microampere type, today of vintage collectors. You cannot count on digital meters, flashing numbers only confuse measurements. I have even seen emulated, digital graphs and other toys, but nothing replaces the two fundamentals:

1. The analog swinging needle, and

2. The practitioner/doctor that knows his points!

The Bane of Fame, No Longer


Dr. Voll’s vintage Dermatron developed a earned reputation for painful measurements. It has a small voltage potential and an amplifier of low gain, thus in order to tap the circuit – from hand mass to probe-tip stylus – considerable pressure must be put on the skin. On many types of skin, that leaves a local erythema and a ‘pit’ where the probe was placed for measurement. By increasing the gain using a sensitive amplifier, less pressure is needed to obtain the maximum conductive threshold. And this is the delicate part. If the voltage gain is increased too much, what happens is the point in question, now becomes the point under treatment. Current is now being forced through the skin and the current summons ionization and therefore the gain on the meter increases artificially. Depending upon the amount of current and/or voltage that is passed through the circuit – hand mass to probe-tip stylus, the artificial high reading may last minutes to hours.

The current Biotron, which cicuitry has remained the same for 25+ years, requires some probe pressure, rarely elicits any discomfort, but the amplifier gain just enough to obtain repeated and consistent measurements without pre-treating the point. It is this aspect, that I am spelling out clearly, is the reason why other instruments, although they claim to do EAV, in fact may not. If the voltage or current in the measuring device is too high, it treats the point while it measures and thus a follow up measurement, as in medication testing, is skewed or obliterated from accuracy! The infamous ‘Nakatani’ ryo-do-raku device, used a whopping 18 volts as inductive skin current, needless to say the measurements of the ‘source’ points yielded nothing but sore spots, and was generally abandoned in favor of Voll’s system back in the 70s. Yes, we have come a long way…

Circuitry Settled

Negativity, that is voltage discharge source-potential like the negative pole on a battery, is the natural resting state of your cells. It's related to a slight imbalance between potassium and sodium ions inside and outside the cell, and this imbalance sets the stage for your electrical generative capacity. Delicate biological cellular processes (like brain function and heart muscle contraction) operate on the scale of microvolts to millivolts. Measuring Body Voltage demonstrates how much voltage is inducted by the electric fields into our body. Measuring Body Amperage demonstrates how current flows within the tissues, whether free flowing or encountering obstruction. As nutrients enter the cells, electrons are released, as well as heat, and this energy in health flows smoothly, following emotions (vegetative currents – Reich), exercise, autonomic functions, and circadian rhythms. Most nerve cells have a steady Resting Membrane Potential (RMP) from 50 to 90 mV, with the inside of the cell negatively charged with respect to the outside. The voltage across the plasma membrane of cells throughout your body is usually between −20 and −200 mV. Unfortunately, this is not enough electron mass (voltage) to drive a d’Arsonval meter. So we have to introduce a little amount of controlled current to push the needle on the meter. Also, by introducing a little voltage into the skin with the negative hand mass electrode, that push provides a pathway for electrons to flow and move towards the probe stylus at the acupuncture point (the positive electrode). Once contact is made, flow of electrons traveling though the body will drive the needle on the meter causing a swing. That swing of the meter is what we seek:

1. Steady upward swing to a stable value is the norm.

2. Rapidly upward swing, popping to near high, spells inflammation, sympathacotonia, coffee imbiber, insomniac, maniac, hyperadrenalism, etc.

3. Droopy upward swing, struggling to reach a stable, peak value, spells chronicity, laxity, vagotonia, potato-coachers, etc.

4. Indicator Dropsy: the needle begins to drop within 3 seconds of reaching the maximum value while pressure on the probe remains in a steady state of pressure. The more it drops, the more affected, chronic, and weaker the tissue system.


I have reduced the Biotron to two simple steps:

1. Turn the unit ON (works best in this mode); and

2. Calibrate Meter to 50 (normotonia) out of the box, that’s it!

The only need to Calibrate after initial set-up would be due to a power source change, e.g. moving to another area with a different electrical distribution. This would only require a very slight turn of the Calibrate Knob. That’s it.

Why Miss Out?

If you had no sphygmomanometer to measure the all important blood pressure, how would you feel?

If you had no stethoscope upon which to auscultate, how would you feel?

Ask me, if I had no Biotron, how would I feel?

Ans. Equally impotent.

I have a limited number of vintage meters I’ve collected down through the years. They are larger than 4 x 4” as a rule, have nice jeweled movements, and sprung with a keeper (that’s a cross bar put across the poles to keep the magnet balanced before installation).

Dr. Voll’s EAV should not vanish into the dusty archives, nor should good primary care doctors. One day, you may find yourself rural, lights out and apocalypse now. Insurance industry collapse, “in God we trust, all others cash”. Stock market collapse and world banking crisis, ditto. This unit can be driven with a solar cell battery, car battery, or any alternate 12 volt source. You can keep on dancing if not prancing with EDS!


Imagine, 30 years of R & D, complete set of training videos, vintage lectures + the latest up-to-date (fresh off a flash drive 2017), full set of manuals and reference points, desktop printed handbook, a research reference source of more than 2,000 acupuncture points, old and new, all at your fingertips!

NOT $18,500 (although its worth that)

NOT $12,500 (fair enuf)

NOT $8,900 (it that was it in 1990 I would have bought it myself, sight unseen)


YES! A complete package for $2500 that allows you to earn while you learn.

1. Biotron IV with probes, 1 year warranty.

2. 11 gigs or training videos (edited). One seminar given in 2005, and the last seminar given just recently. Sample tape: https://youtu.be/5CyGRBhhl74

3. EDS.REFERENCE.CHARTS_(2012.16).pdf



6. Palpation Cranial Points manualr.pdf


Prepaid, free ship. Order now with this link:



Links for more info



desktop printed reference, full color...


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