• CSA C22.2 NO. 80601-2-74:23

    Medical electrical equipment — Part 2-74: Particular requirements for basic safety and essential performance of respiratory humidifying equipment (Adopted ISO 80601-2-74:2021, second edition, 2021-07, with Canadian deviations)
    standard by CSA Group, 03/28/2023

  • AASHTO T 153-22

    Standard Method of Test for Fineness of Hydraulic Cement by Air Permeability Apparatus (ASTM Designation: C204-18ε1)
    standard by American Association of State and Highway Transportation Officials, 2022