Colloidal Silver vs Silver Sol
Guardian™ Silver Sol vs Colloidal Silver – What’s the Difference?
Are you comparing the virtues of Guardian Silver Sol versus colloidal silver? While both products have been found to be effective disinfectants and antimicrobial agents,1 it is important to become aware of the many differences between them.
Note – An updated version of this page is now available: Colloidal Silver vs Silver Sol.
The following chart highlights several of the differences between Guardian Silver Sol and other silver preparations:

(Information compiled from from 2 and 3.)
For more information specifically about silver sol, please view these silver sol videos, silver sol scientific studies, or our page about Guardian Silver Sol.
What is “Colloidal Silver”?
Colloidal silver is a “liquid suspension of microscopic particles of silver”4. Silver particles become suspended in purified water by subjecting them to tremendous amounts of electrical energy. In concentrations of 300 to 3000 parts per million (ppm), colloidal silver has been reported to kill 650 micro-organisms by disabling the enzyme that one-celled bacteria, viruses and fungi need for their oxygen metabolism5. Unfortunately, side effects from inconsistent and high concentrations of silver in colloidal products called for new methods of harnessing the medicinal properties of silver.
Due to the semi-popularized use of colloidal silver over the past century, most people think about older forms of colloidal silver when considering silver as an antimicrobial tool. However, Guardian Silver Sol is very different from older colloidal silver. The distinctions can be confusing to those who are new to studying the differences between silver sol and colloidal silver.
Patented Technology Produces New Silver Sol
Recently-patented6 technology produces an engineered nano particle of silver. The specific resonance, concentration and extremely smaller particle size—in the range of 0.05 to 0.1 nanometers (with a resultant exponential increase in surface area)—provide the ability to kill pathogens by catalytic action. In fact, where “old, homemade colloidal silvers are capable of destroying one pathogen per silver particle, it takes hundreds of times more silver to do what the new silver technology can do in far less concentrations—and the new silver is absolutely safe”7.
Studies have shown that the Guardian Silver Sol is “physically quite different in a number of inherent, measurable, physical properties from colloidal products.”8 In fact, Professor Rustom Roy engineered the exact nano sized elemental silver particle for maximum antimicrobial action.
Guardian Silver is super-charged with 10,000 volts AC current versus the 110 volt DC current of typical colloidal silver preparations. The result is a vastly superior silver sol with distinct characteristics, including the catalytic properties helpful for antimicrobial use.
More information about catalytic properties and silver sol’s mechanisms of action can be found at the Guardian Silver Sol page or the Multimedia Learning Center.
If You Want to Buy Silver, Which will You Choose?
Consider an intriguing comparison of this new silver sol vs. colloidal silver9. While one colloidal silver product was found to inhibit the growth of E. coli (bacteria that causes food poisoning, diarrhea, etc.) at concentrations of 1500 ppm, silver sol killed E. coli at a concentration of only 5 ppm. This makes the silver sol several hundred times more effective than comparable colloid solutions.
What is Nano Technology?
Nano technology refers to the study of controlling elements that are extremely small. This includes elements at the molecular and atomic scale, typically including items 100 nanometers in size or less.
Nano technology has allowed for the production of a silver particle so small that it can enter a single red blood cell10. This is significant because the nano-sized particle is able to travel through capillaries—the tiniest blood vessels in the body, and inactivate viruses at the cellular level. In this way, silver sol acts as a safe “internal disinfectant”.11
More specifically, Professor Rustum Roy of Penn State University engineered a specific size of the Guardian Silver elemental silver particle that resonates at 890 to 910 terahertz—the same frequency as blue germicidal lights used in hospitals for disinfection.
Common Questions About Colloidal Silver
Many people who have just recently heard about colloidal silver have questions about its effectiveness, background, and application. Seasoned advocates of colloidal silver also have questions about how to optimize their use of silver. While Guardian Silver Sol offers an upgraded silver option when compared to older colloidal or ionic silvers, we have prepared the following resources which respond to common questions posed about “colloidal silver”:
- What are the benefits of colloidal silver?
- What colloidal silver dosage is appropriate?
- How can I buy colloidal silver?
- What are some common medical uses of colloidal silver?
- It is okay to use colloidal silver for pets?
- I’ve heard about colloidal silver dangers; What are they?
- How do colloidal silver and Argyria fit together?
For more detailed information about the new silver solution, including information on how Guardian Silver compares to older forms of silver, please consider the following resources:
- Article: The Safety of Silver Solutions and the Risk of Argyria
- Article: Nano Silver Proven Safe for Humans
- Group of Articles: Treatment of Infectious Conditions
- Video: The Silver Solution – A 50 minute overview of silver sol’s background, effectiveness, safety, mechanisms of action, and potential uses. A must see for everyone interested in colloidal silver!

Silver Health Supplements – Safe and Effective
Guardian Silver health supplements have been found to kill pathogenic bacteria and enhance the body’s immune system, without negative side effects12.
To learn more about Guardian Silver, please visit the Multimedia Learning Center. Or, to experience the benefits of Guardian for yourself, explore the pricing and packages.
- 1U.S. Patent 7,135,195 issued November 14, 200, http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=7,135,195.PN.&OS=PN/7,135,195&RS=PN/7,135,195
- 2The Silver Solution, Dr. Gordon Pedersen, p. 32-33.
- 3A Fighting Chance, Dr. Gordon Pedersen, p. 12-15.
- 4www.wikipedia.org
- 5http://all-natural.com/silver-1.html
- 6U.S. Patents: 6,214,299 issued April 10, 201; 6,743,348 issued June 1, 2004; 7,135,195 issued November 14, 2006
- 7http://naturestools.soundconcepts.com/p/PB014 (Sound Concepts, Wellness Report, 2007 “This isn’t your grandma’s silver!”)
- 8Congressional testimony of William D. Moeller, presented April 26, 2005, p. 2
- 9Sourced from The New Silver Solution, Kenneth S. Friedman, Ph.D., p. 16,17
- 10Wellness Report, © 2007, Sound Concepts, “Silver’s Attack Strategy”
- 11The silver solution, CD, by Dr. Gordon Pedersen, © 2007
- 12http://naturestools.soundconcepts.com/p/PB014 (Sound Concepts, Wellness Report, 2007)

