Spectra Systems’ patent pending technology utilizes a combination of a heat and oxygen-free environment to neutralize (> Log10 = -6 reduction of viral load ) SARS-CoV-2, and other viral and bacterial pathogens, while protecting the banknote’s substrate, inks, and security features. The system is effective with both paper and polymer substrates.

The complete system has the capacity to disinfect between 4 million and 6 million notes in 1-2 hours with no consumables as oxygen is extracted from air. Banknotes can remain in strapped or shrink wrapped form for efficient workflow, enabling the disinfection of 15-20 million banknotes in an eight hour shift.


The BDS-1000 is comprised of two primary subsystems:

  • a custom designed large scale oven unit with oxygen sensors and timing controls.
  • a pressure swing adsorption (PSA) nitrogen gas generator.  The PSA extracts oxygen from the ambient air and produces a nitrogen atmosphere within the disinfection oven.


Spectra Launches New COVID-19 Banknote Disinfection System, Currency News Volume 19-No 3 March 2021

Protecting Cash, Safeguarding the Public Against COVID-19 – Part 3, Currency News Supplement Issue 3 July 2020

How Central Banks Treat the Banknote Topic Regarding the COVID-19, Banknote Industry News, Mar. 2, 2020

China: Central Bank Started Banknote Cleaning Process // Spectra Systems: AerisTM Banknote Cleaning System, Banknote Industry News, Feb. 17, 2020

Microbial Contamination of Currency Notes and Coins in Circulation: A Potential Public Health Hazard, Biomedicine and Biotechnology, Oct. 11, 2014

How Bad Is The Problem Of Germ-Covered Cash?, Forbes, Jan. 31, 2014

Dirty banknotes may be spreading the coronavirus, WHO suggests, The Telegraph, Mar. 2, 2020

WHO warns the paper money in your pocket may carry the coronavirus, The Hill, Mar. 4, 2020

Bank notes being burned and quarantined to stop spread of coronavirus, Metro, Mar. 6, 2020

Coronavirus: Iran limits travel and urges banknote avoidance, BBC, Mar. 5, 2020

Optimization of Supercritical Carbon Dioxide Based Virus Inactivation, Characterized by Protein Damage and Maintenance of Epitope Integrity in Vaccine Sterilization, NIH, Jul. 1, 2015

New York University’s Microbiome Project
“.. more than 3,000 bacterial types, including some drug-resistant species..”
The Scientist –  April 24, 2014

Ghanaian Currency
D. Tagoe, S. Baidoo, I. Dadzie, D. Ahator.  “A Study of Bacterial Contamination of Ghanaian Currency Notes in Circulation”  The Internet Journal of Microbiology.  2009 Volume 8, Number 2.

Nigerian Currency
B.E. Asikong, M.E. Eja, C.I. Mboto and C. Abriba. “Microbial Contamination of Nigerian Currency: A Potential Health Risk to Handlers” Global Journal of Medical Sciences Vol 6, No. 1, 2007

BDS-1000 Data Sheet

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Aeris Banknote
Cleaning System

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