Bayonet connection (b-lock)
This connection is very intuitive, it allows a fast and safe fastening of the mask. It has a locking mechanism that allows the user to know if the filter has been placed correctly.

Activated carbons
The quality of the activated carbons used by BLS for the filtration of gases and vapours meets high standards of safety ensuring excellent filtration performances. They are produced without toxic additives such as Hexavalent Chromium (Cr VI) and they are food grade certified (REGVE231/2017). 

Tested against formaldehyde
BLS has carried out specific NIOSH tests in an accredited Laboratory to verify the penetration of Formaldehyde in its carbons used for the ABEK and ABE filters.

Colour codes
◉ A Organic gases and vapours with boiling point > 65 ° C
◉ AX Organic gases and vapours with boiling point ≤ 65 ° C
◉ B Inorganic gases and vapours (e.g. chlorine, hydrogen sulfide, hydrogen cyanide)
◉ E Acid gases and vapours (e.g. sulfur dioxide, hydrogen chloride)
◉ K Ammonia and derivatives
◉ Hg Mercury vapour
P Particles, mists, fumes

Compatible with

• BLS 4000next Half Masks
• BLS 5000 Full Face Masks (5600, 5700)

Note

⁽¹⁾ questi filtri non possono essere usati con semimaschere perché il loro peso è maggiore di 300 g
⁽²⁾ questi filtri sono testati contro l'acido fluoridrico
⁽³⁾ questi filtri sono testati contro la formaldeide
⁽⁴⁾ prefiltri polvere montati su 211, 213, 214, 243, 244