B.E.V. is an acronym for "Bio-Electronic Vincent," an instrument used to measure the three key values of biocompatible water as defined by Professor Louis-Claude Vincent. Professor Vincent was the chief hydrologist in France during the first half of the last century, where he had the unique opportunity to gather statistics showing disease tendencies and mortality rates in populations across Europe. He cross-correlated this information to the water quality those same populations were consuming. As an example, Prof. Vincent found populations with alkaline and oxidized tap water tended to have greater incidence of cancers and thrombosis.
(We want to emphasize that a cross-correlational study does not provide a proven cause-effect relationship, but instead suggests a connection, points towards tendencies, and/or increased risks.)
Prof. Vincent’s research revealed a set of optimal values at the intersection of pH, rH2, and resistivity that was determined to be the most biocompatible for the human organism. The Bio-Electronic Vincent (BEV) provides information never before available; it tells you not only if your water is pure, but whether or not it meets the optimum conditions for biocompatibility with the human body. At Pure Water Systems we are constantly testing the water from our systems to ensure it meets the rigorous BEV standards.
"The amount and type of water we drink is very important to our ability to maintain health. Like food, water can be wholesome or can contribute to disease. The properties of the water we drink are as important as the nutritional content of the food we eat.
The best water for human consumption meets the Vincent (BEV) standards for purity and biocompatibility. For over 20 years, I have advocated pure BEV quality water in my practice as a biological dentist. The products manufactured by Pure Water Systems represent the state-of-the-art in water purification — I recommend them to all my patients."
|Dr. Robert B. Stephan, DDS, B.S., F.A.P.D.
Holistic Dental Association, Board of Directors, Past Pres.
Fellow, Academy of Physiologic Dentistry
International Academy of Oral Medicine and Toxicology
American Academy of Biological Dentistry
Occidental Institute, Research Faculty
Professor Vincent’s research has evolved considerably since his initial work correlating water quality and disease, and is the foundation of the health-care modality Bio-Electronic Terrain Analysis. This approach has yielded remarkable results in clinics throughout Europe.
For those interested in understanding more about BEV, the links below will provide valuable background information.
PH is a measure of acidity or alkalinity, i.e. the hydrogen ion concentration. Assuming the rH2 and r values are within accepted values, the pH of bio-compatible water can range from 4.0 to 6.9. This range is allowed because in extremely pure water it is very easy to effect the pH value—there are no other dissolved substances to buffer the solution. Regrettably, many municipal systems add lime to raise the pH between 7.3 and 8.0 in order to protect pipes from corrosion. (In fact, many of the toxic compounds found in drinking water come from the distribution system itself. Some, like chlorine and fluoride, are intentionally added; others are acquired as water flows through aging and leaking underground pipes—picking up traces of any number of metals including copper, nickel, chromium, even lead.) Learn more about the pH values in pure water.
Many visitors to our site wonder why BEV values call for slight acidity in drinking water, while many web sites promote alkaline drinking water. We find it fascinating that the very idea of the internal environment (terrain) being too acid was developed long before the Japanese and Korean alkalizing machines came to market.
We have carefully reviewed every publication available describing the supposed benefits of alkaline water, and in every case we've found there are significant gaps in the research. Describing pH is only one of the critical parameters for measuring the biocompatibility of drinking water, and is the value most easily influenced. For example, none of the literature accompanying alkaline water machines explains why you would need an alkalizing machine if your tap water is already alkaline (as it is for much of the western USA.)
Further, none of the literature discusses the concentration of the alkaline solution. Alkaline water from an ionizing machine will be significantly different if the source water comes from Seattle vs. Tulsa. These water supplies have vastly different levels of dissolved minerals, yet the literature never mentions how these differences will influence the strength of the alkaline solution. Omissions like these reflect poorly on the credibility of the promoters of alkaline water machines.
RH2 (a value derived via the Nernst Equation and a linear function of pH) provides an indication of oxidation/reduction potential, i.e. the amount of available electrons. This tells you the vitality or energy potential of the water. RH2 also has a scale (similar to pH) that measures from 0 to 42, with 28 representing the mid-point. Values above 28 are considered oxidizing, below 28 reducing. The best water for human consumption has an rH2 slightly on the reducing side of the scale (originally 25 - 29, now more commonly accepted at 20 - 24). Unfortunately, the majority of chlorinated water supplies have an rH2 value higher than 27. (For a detailed technical discussion of the derivation of the rH2 value, see Dr. Robert C. Greenberg's article at Prostate Health Resources.)
Resistivity (the opposite of conductance) is used to measure the amount of dissolved inorganic solids, or TDS. The resistivity value should be as high as possible, indicating an exceptionally low concentration of dissolved contaminates. The higher the resistivity value, the cleaner your water and the better it is for you.
PWS™ BEV-Series systems typically reduce TDS by greater than 99.6%. Given a feed water supply with TDS of 500 ppm, our BEV systems will typically reduce that to ~2 ppm or less.
Taken together, pH, rH2, and resistivity describe the biocompatibility of drinking water. Focusing on any single value, like pH, does not describe the solution adequately. A famous analogy comes to mind that fits perfectly:
Three blind men are in a room with an elephant; they take turns feeling parts of the elephant trying to understand what it is like. The first man feels the elephant's ear and decides that an elephant must be like a boat, because its ear is like a sail. The second feels the elephant's trunk and decides the elephant must be like a snake. The last man feels the elephant's tusk and decides the elephant must be hard and sharp. Each man is correct in understanding a part of the elephant, but he's not really correct because an elephant isn't hard and sharp, or like a snake or a boat. They need to take in the whole picture.
"An Introduction to Biological Terrain" written by Dr. Han van de Braak.
Reprint from The Journal of Complimentary & Alternative Medicine.
May, 2002. ( Adobe Acrobat file, 595 KB)
"Looking at the Patient," also written by Dr. Han van de Braak. This is a
technical case study following a patient through the process of Biological
Terrain Analysis. Journal of Complimentary & Alternative Medicine.
June, 2002 ( Adobe Acrobat file, 381 KB)
The PDF files above are made available here since Dr. van de Braak's web site is
undergoing a redesign at this time.
The link below will take you away from the Pure Water Systems web site - to open the
link in a new window right click on the link and choose "Open in New Window."
Article by Eva Rasche, MD providing general information for patients
exploring Bio-Electronic Terrain Analysis. (html)