6-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

OF THE SECURITIES EXCHANGE ACT OF 1934

For the month of September 2023

Commission File Number: 001-41310

ZENTEK LTD.

(Registrant)

24 Corporate Court

Guelph, Ontario N1G 5G5 Canada

(Address of Principal Executive Offices)

Indicate by check mark whether the Registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F  ☐            Form 40-F  ☒

Indicate by check mark if the Registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):  ☐

Indicate by check mark if the Registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):  ☐

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	ZENTEK LTD.
	(Registrant)
Date: September 11, 2023	By	/s/ Wendy Ford
		Wendy Ford
		Chief Financial Officer

EXHIBIT INDEX

Exhibit	Description of Exhibit
99.1	Press Release dated September 6, 2023 - Zentek Announces Breakthrough Results in Viral Filtration Efficiency with Dust Loading
99.2	Press Release dated September 11, 2023 - Zentek's ZenGUARD™-Enhanced Filters Demonstrate Robust Return on Investment in ParticleOne Study

EX-99.1

Zentek Announces Breakthrough Results in Viral Filtration
Efficiency with Dust Loading

Guelph, ON - September 6, 2023, Zentek Ltd. ("Zentek" or the "Company") (Nasdaq: ZTEK; TSX-V: ZEN), an intellectual property technology development and commercialization company is pleased to announce the results of a recent study comparing the Viral Filtration Efficiency ("VFE") of its ZenGUARD™-enhanced MERV 9 filters with an uncoated MERV 9 filter. The testing was performed by the third-party lab LMS Technologies Inc. ("LMS"), which specializes in the testing and certification of filter manufacturers across the world, referring to the new American Society of Heating, Refrigerating and Air-Conditioning Engineers ("ASHRAE") standards for aerosolized particles and determining the impact of dust loading on VFE and particle filtration efficiency (PFE) as per ASHRAE 52.2 testing standards.

Key Findings:

• Increased Viral Filtration Efficiency with Dust Loading: The VFE of ZenGUARD™-enhanced filters started with a significant advantage over equivalent non-coated filters, from 23.7% to 37.7%, a 59% enhancement or a 14% net gain overall. After the initial test, the VFE was remeasured after dust was added to the filters that was equivalent to 1, 2, 3 and 6 months of operation.  At every dust loading, the VFE performance consistently increased faster for the ZenGUARD™-enhanced filters compared to the uncoated filters. At six months equivalent dust loading, the VFE of the ZenGUARD™-enhanced filter was 85.6% compared to 55.2% for the uncoated filter, a 28.4% net gain. The viral particles were suspended in 0.1um aerosols or smaller, equivalent to the lower range of E1 particles (<1.0um). Testing using this size of aerosol is significantly more rigorous than the testing methodology accepted in the new ASHRAE standard for control of infectious aerosols. These parameters and rationale are consistent with the testing that was performed for the Phase 2 Innovative Solutions Canada Challenge conducted by the National Research Council of Canada in the simulated classroom environment.

• Consistent Pressure Drop: The pressure drop remained consistent between ZenGUARD™-enhanced and uncoated filters as dust loading increased, indicating that ZenGUARD™ does not adversely affect airflow or energy efficiency of the HVAC system.

• Effective Particle Removal: ZenGUARD™-enhanced filters operated similarly to regular MERV 9 filters when tested for PFE, effectively removing particles across all size ranges (E1, E2, E3) as per ASHRAE 52.2 standards.

"This testing confirms that ZenGUARD™ HVAC filters not only have an initial VFE advantage over uncoated filters, but ZenGUARD™ provides improved protection against infectious aerosols over time as dust accumulates on the filter," commented Greg Fenton, CEO of Zentek. "The impact of dust on the effectiveness of our technology has been one of the main unknown variables requiring clarity for industry and user groups interested in potentially adopting our technology. We addressed this critical metric with a leading-edge testing program conducted by LMS. We believe our ability to increase VFE without additional equipment or an increase in energy consumption is unique in the industry. Significantly, now that we have proven that dust doesn't inhibit protection from ZenGUARD™ over the lifetime of the filter, and actually enhances it without additional pressure drop compared to uncoated filters, the ZenGUARD™ value proposition is that much more compelling for those looking for a simple solution to improve indoor air quality and people's health."

About Zentek Ltd.

Zentek is an ISO 13485:2016 certified graphene technology company focused on the research, development and commercialization of novel products seeking to give the Company's commercial partners a competitive advantage by making their products better, safer, and greener.

Zentek's patented technology platform ZenGUARD™, is shown to have 99-per-cent antimicrobial activity and to significantly increase the bacterial and viral filtration efficiency of both surgical masks and HVAC (heating, ventilation, and air conditioning) systems. Zentek's ZenGUARD™ production facility is located in Guelph, Ontario. Zentek's patent pending ZenARMOR™ technology platform is focused on corrosion protection applications.

Zentek has a global exclusive license to the Aptamer-based platform technology developed by McMaster University which is being jointly developed by Zentek and McMaster for both the diagnostic and therapeutic markets.

For further information:

investorrelations@zentek.com

To find out more about Zentek, please visit our website at www.Zentek.com. A copy of this news release and all material documents in respect of the Company may be obtained on Zentek's SEDAR profile at http://www.sedar.com/.

Forward-Looking Statements

This news release contains forward-looking statements. Since forward-looking statements address future events and conditions, by their very nature they involve inherent risks and uncertainties. Although Zentek believes that the assumptions and factors used in preparing the forward-looking information in this news release are reasonable, undue reliance should not be placed on such information, which only applies as of the date of this news release, and no assurance can be given that such events will occur in the disclosed time frames or at all. Zentek disclaims any intention or obligation to update or revise any forward-looking information, whether as a result of new information, future events or otherwise, other than as required by law.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

EX-99.2

Zentek's ZenGUARD™-Enhanced Filters Demonstrate
Robust Return on Investment in ParticleOne Study

Guelph, ON - September 11, 2023, Zentek Ltd. ("Zentek" or the "Company") (Nasdaq: ZTEK; TSX-V: ZEN), an intellectual property technology development and commercialization company is pleased to announce the successful results of a recent study conducted by ParticleOne, an RWDI Ventures company ("RWDI").

The study evaluated the performance of Zentek's ZenGUARD™-enhanced filter technology in comparison to a standard Minimum Efficiency Reporting Value ("MERV") 9 filter. The study was conducted to assess the effectiveness of filters in removing infectious particles from the air and to determine the potential return on investment ("ROI") of enhanced viral filtration from using ZenGUARD™ technology.

Key Findings:

• The ParticleOne model ROI analysis indicated that opting for the ZenGUARD™-enhanced MERV 9 filter for enhanced viral filtration resulted in a substantial reduction in annual absenteeism costs ($15,016.95) compared to a regular MERV 9 filter in an office space of 10,000 square feet with 75 occupants.

"Upon reviewing ZenGUARD™ HVAC filter performance, it is clear that the technology does not focus purely on physical removal of harmful pathogens but also on deactivating pathogens, thus preventing the particles from infecting occupants within the space," commented Justin Downey, RWDI Strategic Director and Principal. "Consequences of infectious disease will always exist and be significant, but with an enhanced understanding of risk mitigation tools like ZenGUARD™ HVAC filters and proactive planning, the expectation is that our future vulnerability to seasonal illness, surges in new variants of SARS-CoV-2, or even the spread of novel respiratory pathogens, can be lessened."

"Poor indoor air quality remains a significant challenge for employee health, wellness, and productivity. With this third-party assessment by ParticleOne, we have been able to help quantify the value proposition of ZenGUARD™ HVAC filters in helping address this problem," commented Greg Fenton, CEO of Zentek. "Importantly, ZenGUARD™ technology focuses on increasing viral filtration efficiency without additional equipment or an increase in energy consumption. We believe this combination is unique in the industry and incredibly important as we all look to improve people's health indoors while also reducing our carbon footprint."

ParticleOne Study Background:

• The study was performed using ParticleOne's multi-pathogen predictive risk assessment software that assesses a space's risk of airborne transmission of SARS-CoV-2, Influenza A/B, Rhinovirus, and RSV, the most prominent respiratory agents that disrupt the workforce and cause absenteeism

• The model is a combination of Wells-Riley Transmission methods adapted to calculate infectious disease probabilities under dynamic, ventilated conditions and a network of well-mixed ventilated zones, using a continuously stirred tank model adjusted to allow flow between breathing and overhead zones and associated air change and dilution effects

• The software utilizes a filter's estimated efficiency of physical removal or filtration of the most penetrating particle size falling within the American Society of Heating, Refrigerating and Air-Conditioning Engineers ("ASHRAE"), 52.2 Standard's E1 range (0.1 -1.0µm)

• The model uses inputs fundamental to measuring virus resiliency, including:
  • Building Performance - characteristics of size and volume of air in the space, ventilation and filtration
  • Occupant Dynamics - number of people, activity levels, duration of occupancy, masking and distancing
  • Case Count Settings - applied epidemiological factors including, transmissibility of each pathogen, typical infectious disease prevalence (i.e., Background Infection Rate), and vaccination

• The space prototype used for the study was a typical open office layout based on ParticleOne and RWDI benchmarks:
  • Office space of 10,000 square feet; 10-foot ceiling height
  • 75 occupants
  • 3 air changes per hour
  • Outdoor air percentage of 33%

• ParticleOne results then outline transmission risk probabilities by applying a Risk Index. This directly correlates to probabilities and frequency of infection in each specific space and to reducing yearly absenteeism rates

• The study leveraged testing results from LMS Technologies and the National Research Council of Canada ("NRC")

• ParticleOne determined the ZenGUARD™-enhanced viral filtration efficiency to be equivalent to the physical filtration efficiency as used within the software to represent the "removal" of harmful pathogenic particles.

• Absenteeism costs included in the model were based on the following ParticleOne and RWDI benchmarks:
  • Of the projected days absent due to respiratory illness, only 65% of workers stay home to rest
  • The residual 35% of ill workers remain in office, where they are 70% as productive as they would be when healthy
  • Average annual employer cost of $99,750 per employee ($75,000 employee salary + 30% estimate for other employee benefits and costs)

Canadian Federal Government Opportunity

As previously disclosed, Zentek was awarded a Government of Canada testing contract and has successfully completed a nearly two-year testing program through Canada's Innovative Solutions Canada Testing Stream. Testing was in partnership with the NRC's Aerospace Research Centre, Construction Research Centre and Real Property Planning Management Groups. Part of the Innovative Solutions Canada Testing Stream is a Pathway to Commercialization program, which gives successful Canadian small and medium-sized enterprises the exclusive opportunity to sell their innovation directly to the Government of Canada through Public Services Procurement Canada.

Using a similar approach to the ParticleOne methodology above, the Company estimates that absenteeism costs across the entire Federal Public Service could be reduced by approximately $112.5 million. The key assumptions underlying the Company's analysis are as follows:

• 413,334 full-time equivalent employees across the Federal Public Service in Canada¹
• All federal government buildings where these employees work use MERV 9 filters currently and convert to ZenGUARD™-enhanced MERV 9 filters
• Space prototype assumptions consistent with those used by ParticleOne as outlined above
• Absenteeism cost assumptions consistent with those used by ParticleOne, except for the total average annual employee compensation of $125,300¹

The above analysis is disclosed for illustrative purposes only, and there can be no assurance that (i) the assumptions used by the Company in conducting its analysis are accurate and correct, (ii) the above analysis is or will be accurate or consistent with any third-party analysis, (iii) any third-party, including but not limited to, and governmental branch or office, awards or offers any contract to the Company, or (iv) the Pathway to Commercialization program will result in any future sales or revenue for the Company, and readers should not place undue reliance on such analysis.

National Air Filtration Association (NAFA) Conference

Zentek will be participating in the 2023 NAFA Annual Convention from September 13-15 in Nashville, TN. This event brings hundreds of professionals from numerous companies in the air filtration industry under one roof. It's an important annual event for networking and for gaining insights into best practices and new technologies in the air filtration industry. The Company looks forward to discussing the results of its ZenGUARD™ ROI study and its recently disclosed viral filtration efficiency results with dust loading with NAFA attendees.

About ParticleOne

ParticleOne is virus-resiliency software for buildings, developed and used by the world-renowned environmental and building-performance engineers at RWDI. 

Recognizing that healthy indoor air must include infectious disease controls, RWDI developed ParticleOne to evaluate the specific airborne viral risks in buildings and shared spaces. The software determines appropriate risk mitigation measures to better protect people and business operations.

About Zentek Ltd.

Zentek is an ISO 13485:2016 certified graphene technology company focused on the research, development and commercialization of graphene-based novel products seeking to give the Company's commercial partners a competitive advantage by making their products better, safer, and greener.

Zentek's patented technology platform ZenGUARD™, is shown to have 99-per-cent antimicrobial activity and to significantly increase the bacterial and viral filtration efficiency of both surgical masks and HVAC systems. Zentek's ZenGUARD™ production facility is located in Guelph, Ontario.

For further information:

investorrelations@zentek.com

Francis Dube

Tel: (289) 821-2820

Email: fdube@zentek.com

To find out more about Zentek, please visit our website at www.Zentek.com. A copy of this news release and all material documents in respect of the Company may be obtained on Zentek's SEDAR profile at http://www.sedar.com/.

Forward-Looking Statements

This news release contains forward-looking statements. Since forward-looking statements address future events and conditions, by their very nature they involve inherent risks and uncertainties. Although Zentek believes that the assumptions and factors used in preparing the forward-looking information in this news release are reasonable, undue reliance should not be placed on such information, which only applies as of the date of this news release, and no assurance can be given that such events will occur in the disclosed time frames or at all. Zentek disclaims any intention or obligation to update or revise any forward-looking information, whether as a result of new information, future events or otherwise, other than as required by law.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

1.Office of the parliamentary budget officer. (2023, April 5). Personnel Expenditure Analysis. Retrieved September 6, 2023, from https://distribution-a617274656661637473.pbo-dpb.ca/b6aaf0274b613d1d86debb6e038f8794194733225f5dc2b4bc99f712c6c6f343