Virolyze has a shelf life of 6 months after it has been opened and up to 1 year unopened.
Certifications fall into a range (50 to 500 ppm) for surface disinfectants. VIROLYZE with its 500ppm falls within this range. 500ppm gives VIROLYZE the stability and kill time as a surface sanitizer. VIROLYZE’s pH is near human skin pH.
Please see page 3 on stability studies: (Page 3 identifies time period of stability and confirms VIROLYZE 6 Month Shelf Life)
https://pubmed.ncbi.nlm.nih.gov/29279579/

Shelf Life

Protection
360 Degree Protection Against All Viruses and Bacteria
The reactor that makes VIROLYZE electrically charges the water. The positive ions of VIROLYZE seek out the negative ions of all viruses and bacteria which allows for a 360-degree kill.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4565347/