GrapheneFacts

title: Zentek ZenGUARD description: “Graphene-based coat on filter media and PPE. Regulatory row dated. ASHRAE figures company-stated.” tags:

  • industry

ASHRAE numbers: Preliminary (company recap of a test). Health Canada classification: dated release.

Parent: applications · zentek

ZenGUARD is a coating on a substrate. HVAC filter media and surgical masks / air-contact surfaces.

Regulatory

  • Brand 13 Apr 2021. Canadian patent PPE + HVAC granted 6 Dec 2022 (term to 20 Sep 2041) in later SEC text.
  • 29 Nov 2021 — Health Canada MDEL 18823, Class I including coated devices.
  • 6 May 2026 — PRD: Enhanced Air Filters not under the Pest Control Products Act; s. 3(1)(a) mechanical mode of action; conditional on design, instructions, marketing. Company then accepting Canadian filter orders.

ASHRAE 52.2 (company)

6 May 2026 materials: media tested to ASHRAE 52.2; MERV 9 with pressure drop they say matches uncoated media at standard and high airflow. The lab report file is not on this shelf. The ASHRAE standard PDF is a paid method document, not their result sheet.

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