tests and certifications
WHO-defined "surgical respirator " grades
USA surgical N95 certificated by NIOSH
EU EN14683 Type IIR + EN149 FFP2 NR
10A and RB respirators are WHO-compliant.
In November 2020, the World Health Organization (WHO) published a technical specification document providing interim guidance on the standards and performance of PPE against COVID 19. Surgical Respirators are the recommended types of masks during the pandemic.
Both 10A and RB respirators are officially graded as surgical respirators.