Updated on February 6, 2024


Created on August 31, 2021

Kinnos Highlight for Liquid Bleach

Upcoming Update

Provides real-time visual colorization so healthcare workers can see the surfaces they have covered. Courtesy of WHO Compen

Developed By
  1. Kinnos
Tested By
  • Cleveland VA Medical Center
  • International Medical Corps
Content Partners


Product Description

Kinnos Highlight colorized bleach additive can be combined with standard bleach disinfectants to enable real-time visual colorization so healthcare workers can see exactly what surfaces they have covered to aid in the disinfection process. The color then fades to colorless after a few minutes to prevent staining. Peer-reviewed studies have demonstrated quantifiable improvements in disinfection technique and that the additive is safe to use.

This product was selected for inclusion in WHO’s 2021 Compendium of Innovative Health Technologies for Low‐Resource Settings

Target SDGs

SDG 3: Good Health and Well-Being

Market Suggested Retail Price


Target Users (Target Impact Group)


Distributors / Implementing Organizations

Highlight is distributed through the manufacturer.

Manufacturing/Building Method

Manufactured in the United States

Intellectural Property Type


User Provision Model

Highlight is available directly from the manufacturer.

Distributions to Date Status

As of October 2020, between 10,000-50,000 units have been distributed.

Capacity (Liters)

Small size mixes with 0.65 L bleach

Large size mixes with 5 L bleach



Indispensable equipment for function (Y/N)


Maintenance or calibration required by user at time of use? (Y/N)


Method of sterilization


Power Supply Type


Water required


Weight (kg)

0.09 kg

Design Specifications

Highlight color additive comes as a powder and is dissolved directly into 5 liters of disinfectant (5,000 ppm bleach/chlorine solution). After 60 seconds of mixing, the powder is fully dissolved, and the colorized bleach/chlorine solution can be applied onto surfaces using typical applicators, such as pump sprayers, trigger sprayers, or a bucket and rag. The mixture is good for up to 5 hours after mixing, and the color disappears 3 minutes after application.

Product Schematics

Technical Support

Provided by the manufacturer.

Replacement Components



1-year shelf life. The color fades in 3 minutes on surfaces and lasts for 5 hours in bleach solution after mixed.

Manufacturer Specified Performance Parameters

Visually show disinfected area, color fade over time to prevent staining, fast and intuitive for untrained individuals, mitigate risk of disease spread.

Vetted Performance Status

Research has found that the technology improved surface coverage of bleach/chlorine disinfectants from 33% coverage to 99.9% coverage. Additionally, research has found that the product is safe/non-toxic, and that it does not reduce the efficacy of disinfectants. After a month of use, failure rates of ATP bioluminescence quality control scores reduced from 5.9% to 0%. Additionally, this technology has been tested in Liberia, Guinea, Haiti, Uganda, and DR Congo for suitability in low-resource settings with healthcare workers in Liberia and Guinea describing improved confidence and feelings of safety from using the product.  



Complementary Technical Systems


Academic Research and References

Tyan, K., Jin, K., & Kang, J., 2019, A novel color additive for bleach wipes indicates surface coverage and contact time to improve thoroughness of cleaning. Infection Control & Hospital Epidemiology, Vol. 40(2), pp. 256-258. doi:10.1017/ice.2018.323

Tyan, K., et al., 2018, Evaluation of the antimicrobial efficacy and skin safety of a novel color additive in combination with chlorine disinfectants. American Journal of Infection Control, Vol. 46(11), pp. 1254 – 1261.

Kang, J., et al., 2018, Field testing of a novel colour indicator added to chlorine solutions used for decontamination of surfaces in Ebola treatment units. Journal of Hospital Infection, Vol. 99(2), pp. 188 – 191.

Mustapha, A., Cadnum, J.L., Alhmidi, H., Donskey, C. J., 2018, Evaluation of novel chemical additive that colorizes chlorine-based disinfectants to improve visualization of surface coverage. American Journal of Infection Control, Vol. 46( 1), pp. 119 – 121

Compliance with regulations

Does not require formal registration (adjuvant EPA classification)

Evaluation methods

This product was evaluated for coverage and ease of use.

Other Information

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