4 Projects in Disinfection and Santization - ON-099

Preferred Disciplines: Microbiology (disinfection and santization) and Master or PhD or Post-Doc
Company: CleanSlate UV
Project Length: 4 to 6 months
Desired start date: As soon as possible
Location: Toronto, ON 
No. of Positions: 1
Preferences: Ontario and Quebec. Language: no preferences

About the Company: 

CleanSlate UV, a Toronto-based startup has developed rapid disinfection device for portable devices such as phones, tablets and non-critical devices used by food processing facilities and hospitals.

Our mission is simple: eliminate pathogens on mobile devices by creating effective and easy-to-use products. We do this by designing technologies that people will actually use, backed by science reflective of real-world conditions. We harness the power of UV light to kill the most dangerous bacteria without damaging expensive touch-screen equipment.

CleanSlate allows staff, patients and visitors to sanitize their device while they wash or sanitize their hands. This helps improve hand hygiene and reduce the risk of hospital acquired infections.

The company was founded in June 2014 out of Queen’s University in Canada. Since then, our solution has been deployed by hospitals and food processing facilities in Canada, the United States and New Zealand. In October of 2015, we were awarded a $500,000 USD innovation investment by 43North in Buffalo.

Project Description:

  • Project 1: Correlation between dosage with microbiology kill rate

Scope of this project is conduct research study to understand the effect of microorganisms kill rate with increase in exposure time or dosage of UVC light. Very minimal study has been done in the past to understand the behavior of microorganisms when exposed to different dosage levels of UVC light.

  • Project 2: Effect of ambient temperature to accelerate the microorganisms kill rate when exposed to UVC light

Based on our internal studies, we have found that the UVC output varies based on the ambient temperature. Through this project, we aim to understand the behavior of microorganisms kill rate when exposed to constant UVC light at different ambient temperature

  • Project 3: Cleaning assessment of disinfectant wipes and germicidal UVC light

Scope of the research is to compare the performance of cleaning wipes and germicidal UVC light when cleaned as per manufacturer instructions. The research is aimed at assessing the superior disinfection method.

  • Project 4: Effect of artificial soil load with UVC disinfection

Germicidal UVC light is proven to destroy pathogens on hard non-porous surfaces. However, the effect of soil load presence is unknown when exposed to UVC light. This research is aimed to understanding the kill rate with soil load content on the surface.

Research Objectives:

  • Project 1 and 2: Understand the correlation of dosage and temperature with microorganisms kill rate. 
  • Project 3: Validation of UVC-based disinfection method as better alternative for wipes
  • Project 4: Understand the effect of soil presence on the devices when disinfected using UVC light


  • Prepare the test microorganism by growth in liquid culture medium
  • Supplement with an artificial soil load if required
  • Inoculate sterilized carriers or devices with a volume of test culture and dried
  • Treat the test carriers with UVC light or cleaning wipes as required
  • Recover any microorganisms left on the carrier
  • Measure the colony forming units and compare with the control carrier

Expertise and Skills Needed:

    • Microbiology testing and analysis (all projects)


    For more info or to apply to this applied research position, please

    1. Check your eligibility and find more information about open projects.

    2. Complete this webform. You will be asked to upload your CV. Remember to indicate the title of the project(s) you are interested in and obtain your professor’s approval to proceed!

    3. Interested students need to get the approval from their supervisor and send their CV along with a link to their supervisor’s university webpage by applying through the webform.