Nanozen
http://www.nanozen.ca/Handheld Particle detector
Handheld particle detector for carcinogenic and explosive particles. Helps prevent explosions in sawmills and cancer for workers in mines, mills, factories, food processing plants worldwide ($1.3B market) . Products are based on an industry changing and patented (pending) technology out of UBC by Founder Dr Winnie Chu. There is a pent up demand in BC alone of $2M. Competition products are ineffective for the applications according to the target customers.
Angel list: https://angel.co/company/nanozen
Total raised: $200K