Dräger Panorama Nova S - RA Instructions For Use Manual page 20

Disposal
Observe ISO 2230 and national regulations concerning the storage,
maintenance and cleaning of rubber products.
Dräger rubber products are treated with an agent to protect against
premature ageing which in some cases is visible as a grey-white
coating. This coating can be washed off with a brush and soapy water.
7 Disposal
Dispose of the full face mask in accordance with the applicable rules
and regulations.
20 (approved by Dekra Exam) Panorama Nova S - RA