Factor
| Zentek (ZenGUARD™)
| Camfil
| 3M (Filtrete / Commercial)
|
Technology
| Graphene-based antimicrobial coating
| Mechanical filtration, some treated media
| Mechanical filtration, antimicrobial-treated fibers
|
Claims made
| Actively deactivates viruses & bacteria
| Mostly captures particles
| Mostly reduces growth on filter
|
Target markets
| Hospitals, schools, public buildings
| Hospitals, labs, commercial
| Consumer + commercial
|
Health Canada exposure
| High (triggered review)
| Medium (managed via wording)
| Medium–low (claims constrained)
|
PMRA risk
| Direct (pest control interpretation)
| Avoided
| Avoided
|
Medical device angle
| Yes – Class I pursued
| No (intentionally avoided)
| No
|
Regulatory strategy
| Seek clarity & approval
| Avoid classification
| Avoid classification
|
