In 2019, Respro tested its anti-smog masks for compliance with the EN149:2001 + A1:2009 standard. The tests were carried out at the Central Institute for Occupational Protection (CIOP) in Łódź, Poland. This is the leading scientific institute for this type of testing in Europe. In the next step, the formal part was carried out, in which the conformity of the masks with Regulation 2016/425 was assessed. In this part, Respro cooperated with Notified Body number 1463 - which is PRS SA from Gdansk. The result was the obtaining of the EU Research Certificate on 12 September 2019. A copy of the Certificate is shown below.