Lab tests
Independently lab tested. Every page posted.
We don’t ask you to take our word for it. Three independent U.S. laboratories tested our chelated silver, and the reports are below exactly as we received them — scans and all.
MRSA Staphylococcus aureus C. diff E. coli Pseudomonas Candida albicans Aspergillus brasiliensis
These reports cover both products
The Silver Spray and the Silver Gel carry exactly the same patented GermProof® Complex — 200 ppm chelated silver bonded to vegan chitosan derived from mushrooms. The labs tested that chelated silver. The only difference between the two products is the applicator.
2015 · USP <51>
Consumer Product Testing Co.
Staphylococcus aureus, E. coli, Pseudomonas, Candida albicans, Aspergillus brasiliensis — PASS
2012 · EPA GLP lab
Universal Laboratories
Chitosan-Silver Complex coefficient test against MRSA
2011 · Time-kill study
C.G. Laboratories
Chelated silver time-kill study with C. diff
Report 1 of 3
Consumer Product Testing Co. — USP <51>: PASS
Fairfield, New Jersey · Study M15-3022 · June–July 2015 · Sample: Antimicrobial Chelated Silver.
USP <51> is the U.S. Pharmacopeia’s antimicrobial effectiveness test. The lab inoculates the product itself with a large dose of each organism, then counts what survives at 14 and 28 days. It is a hard test to fake: if the formula can’t hold the line, the counts come back up.
Result: Staphylococcus aureus, E. coli, Pseudomonas aeruginosa and Candida albicans fell from hundreds of thousands (or millions) per gram to below 10 by day 14, and stayed there at day 28. Aspergillus brasiliensis (black mold) was reduced and did not grow back. The product met the USP <51> acceptance criteria: PASS.
Scans of the report as the laboratory issued it, pages 1–3.
Report 2 of 3
Universal Laboratories — MRSA, at an EPA GLP lab
Hampton, Virginia · Study completed August 19, 2012 · Final report September 5, 2012.
A coefficient test of the Chitosan-Silver Complex against Methicillin-Resistant Staphylococcus aureus (MRSA), certified as performed under U.S. EPA Good Laboratory Practice standards (40 CFR Part 160) and reviewed by the laboratory’s Quality Control department.
GLP matters because it governs the paperwork, not just the pipettes: how the sample was handled, who signed off, and whether the study can be audited afterwards. More about MRSA →
Report 3 of 3
C.G. Laboratories — C. diff time-kill
Granbury, Texas · Tested September 22–26, 2011 · Report 11MSC033.
A time-kill study of chelated silver against Clostridium difficile (ATCC 9689) — the spore-forming organism better known as C. diff, and one of the harder things in a lab to get a result against. Samples were plated at time zero, 30 minutes and 1 hour.
Result: in both runs, no C. diff colonies were recovered at the 30-minute time point. The full table, including the single colonies found at other time points, is in the report beside this — we post it whole rather than quoting the good row.
The full organism list
Every organism our chelated silver has been independently lab tested against, and which lab did it.
MRSA
Methicillin-resistant Staphylococcus aureus · Universal Laboratories, 2012
Staphylococcus aureus
Common skin bacterium · Consumer Product Testing Co., 2015
C. diff
Clostridium difficile, ATCC 9689 · C.G. Laboratories, 2011
E. coli
Escherichia coli · Consumer Product Testing Co., 2015
Pseudomonas aeruginosa
Water-loving bacterium · Consumer Product Testing Co., 2015
Candida albicans
Yeast · Consumer Product Testing Co., 2015
Aspergillus brasiliensis
Mold · Consumer Product Testing Co., 2015
Lab conditions vs. real life
These are laboratory results under laboratory conditions. Real skin gets rubbed, washed, sweated on and shed, so here are honest numbers instead:
✓ About 4–8 hours on hands and feet
✓ Up to 24 hours on hard surfaces and covered skin
✓ The Gel holds a bit longer than the Spray where you put it, because it’s thicker
✓ Reapply after washing, heavy sweating, or blowing your nose
How it works · About MRSA · FAQ · GermProof vs. alcohol
Shop GermProof®
The same tested Complex in both. The Spray covers fast; the Gel aims small.
The reports above describe independent laboratory testing of our chelated silver under laboratory conditions. GermProof is not a drug and is not intended to diagnose, treat, cure or prevent any disease.