SGE400/3BB Gas Mask (medium/large - code: 33992) (small/medium - code: 33983) Identical to the SGE 400/3, but with a butyl rubber face seal to respond to the CBRN requirements. TECHNICAL GAS MASKS INFORMATION: Filter ports: 3 (side &; front) Face silicone seal: Silicone Face shield coating: Yes Additional bottom port: Available Drinking device option: Yes Microphone connection: Available with side port substitution Lenses support: Available as access Integrated hood: Available Speaking diaphragm: Available on request Mustard gas resistance: Yes Mestel Safety Credentials Mestel Safety understands the importance of testing and certifying products. Therefore, over the years, Mestel Safety has undergone many certification processes and testing. The following are some of the certifications and countries that the Mestel Safety Gas Masks have been certified in: (more information is available upon request) Certification ISO 9001-2008 University of Genoa Certification Spain (Centro Nacional de Medios de Protec- tion, Certificate of Approval No. 3082) Denmark(Societa Generale Elastomeri S. p. A., Ar- bejdstilsynet) Australia(Work Cover Authority, Certificate of Ap- proval No. 1778) England( Health and Safety Executive, Certificate of Approval, CA/156/89) Complies with BS EN 136 UK, Germany, Denmark, HSE, DIN, EN 136:98 NATO classified supplier