Graphene Coatings · Air filtration & PPE
ZenGUARD™.
Patented silver graphene oxide, applied directly to standard filter media. It enhances the filter’s ability to disrupt aerosols, with no measurable effect on airflow. Developed in Guelph, Ontario, and now sold direct in residential furnace filters and surgical masks.
Two products · One technology
Built into products people already use.
Each product starts as a standard, certified product. ZenGUARD™ technology, formulated for each, is the only change, so fit, format and routine stay the same.
Enhanced Air Filter
A MERV 9A furnace filter with the ZenGUARD™ coating, sold in packs of two or four, with subscriptions every 90, 60 or 30 days. Also suited to commercial HVAC systems, with bulk ordering for offices, clinics, schools and property portfolios.
MERV 9A · 1, 2 and 4 inch depths · Packs of 2 or 4
Surgical Masks
A four-layer ASTM F2100 Level 3 surgical mask with the ZenGUARD™ coating on layer two. The same fit and single-use format as a standard mask.
ASTM F2100 Level 3 · 4-layer · Single-use · Box of 50 or case of 10
01 · Inside the filter
The same MERV 9. Enhanced.
A standard MERV 9 furnace filter with one layer a regular filter does not have. ZenGUARD™ silver graphene oxide is applied directly to the media, which enhances the filter’s ability to disrupt aerosols, with no measurable effect on airflow.
Applied directly to the media: about 2.6× the viral aerosol disruption of uncoated media.
Animation for illustrative purposes only.
- 01Cardboard frameRigid kraft board keeps the filter square in the slot.
- 02Pleated MERV 9 mediaThe same media you’d find in a regular MERV 9.
- 03ZenGUARD™ coatingSilver graphene oxide, applied directly to the media. The one layer a regular filter doesn’t have.
- 04Expanded-metal supportBacks the pleats so they hold their shape under airflow.
No measurable airflow impact · Meets ASHRAE 52.2 · Three peer-reviewed ASHRAE publications
Shop the furnace filter02 · Inside the mask
Four layers. One enhanced.
ZenGUARD™ is a silver graphene oxide coating, not a mask. Zentek starts with a standard ASTM Level 3 surgical mask and applies it directly to one of its four layers, so the layers you already trust work harder.
Layer two is coated with ZenGUARD™: silver graphene oxide, applied directly to the layer.
- 01Hydrophobic exteriorFluid-resistant outer layer that faces the room.
- 02ZenGUARD™ coated layerSilver graphene oxide, applied directly to the layer. The one layer a regular mask doesn’t have.
- 03Melt-blown filterThe fine-fibre layer that does the filtering.
- 04Hydrophilic interiorSoft inner layer against your face that absorbs moisture.
Select a layer to explore it. For illustrative purposes only.
ASTM F2100 Level 3 · 4-layer · Single-use · Made in Canada
Shop surgical masksPerformance
The numbers.
Each comes from a named test method or a field pilot. Full reports on request.
ZenGUARD™ enhances existing filtration; it is not HEPA. ZenGUARD™ filters have not been tested in homes. Nothing on this page constitutes a medical claim.
For business
Partner with Zentek.
Three ways to work with ZenGUARD™: outfit your buildings, carry it as a distributor, or build it into your own products. Each starts with a short form, and we reply within one business day.
ZenGUARD™ for your buildings.
Enhanced Air Filters and ASTM F2100 Level 3 surgical masks for offices, clinics, schools and properties, delivered on the schedule each building needs.
- Filters in 1, 2 and 4 inch depths, with no measurable effect on airflow
- Deliveries every 90, 60 or 30 days, to one site or many
- Estimated 22% lower fan energy than the MERV 13 filters replaced, in a three-month school pilot
Offices · Clinics · Schools · Property managers
Get a quote for your buildingCarry ZenGUARD™.
Add two Made-in-Canada product lines to your catalogue: Enhanced Air Filters and ASTM F2100 Level 3 surgical masks.
- A ready sales kit: renders, graphics, spec sheets and lab reports
- Ordering and documents through the partner portal
- Training for your sales team
HVAC wholesale · Medical and PPE supply · Retail
Become a distributorZenGUARD™ inside your product.
Zentek supplies coated filtration media to filter and PPE manufacturers. Silver graphene oxide is applied directly to the media you already use.
- Coated media to your spec, or licensing for your own lines
- Samples and test data for your qualification
Air filter makers · Mask and PPE makers
Talk to the coatings teamNot sure which fits? Email sales@zentek.com and we’ll point you the right way. Shopping for your home? Visit the ZenGUARD™ store.