MSA 93 ABEK 2Hg/St 10097232 Filter Made in Germany 

The "93 ABEK2Hg/St" marking identifies a specific MSA combination filter designed for comprehensive respiratory protection. This filter (part number 10097232) is engineered to protect against a wide range of gases, vapours, and particles. 
The codes correspond to protection against different classes of hazardous substances according to the EN 14387 standard:
A - Organic gases and vapours (boiling point >65 °C), e.g., solvents.
B - Inorganic gases and vapours (e.g., chlorine, hydrogen sulfide).
E - Acidic gases and vapours (e.g., sulfur dioxide, hydrogen chloride).
K - Ammonia and organic ammonia derivatives.
Hg - Mercury vapours.
2 - Refers to the filter capacity class for A, B, E, and K, indicating medium capacity (0.5% by volume maximum concentration).
P3 - Highest efficiency class for particles (dusts, mists, fumes).
R D - Reusable (R) and passes the dolomite clogging test (D).