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Are you worried about your safety in hazardous environments? Look no further than our Special Combined Filter Cartridge (VK-700)—your comprehensive respiratory defense solution. The VK-700 Smoke & Carbon Monoxide Gas Mask Filter offers comprehensive protection and effectively filters carbon monoxide and a wide range of contaminants, including: Organic solvents and acid gases Ammonia and mercury vapors Hydroxides and phosphoric acid derivatives Solid and liquid aerosols Radioactive particles and asbestos fibers CBRN agents and tear gas   Key Features of the VK-700 Smoke & Carbon Monoxide Gas Mask Filter Certified Quality: Meets EN 14387:2004+A1:2008 standards, ensuring reliable performance in challenging environments. Low Breathing Resistance: 190 Pa at 30 L/min and 870 Pa at 95 L/min, providing comfortable, unobstructed airflow during extended use. Versatile Compatibility: Available with EN 148-1 (Rd 40x1/7") or GOST 8762-75 (OZ 40x4mm) thread connections for various full-face gas masks. Compact and Lightweight: 450 g, 95 mm in height, and 110 mm in diameter for easy integration with existing gear. Extended Service Life: 10-year shelf life when properly stored between -5°C and +30°C and at humidity levels below 80%. Superior Filtration Efficiency: Maximum penetration values of just 0.05% for both solid and liquid aerosols. Enhanced Mercury Vapor Protection: Rated for 100 hours of mercury vapor filtration, surpassing many competitors. VK-700 Smoke & Carbon Monoxide Filter Technical Data Technical Data Specifications Filter Type A2B2E2K2HgNOCO20P3 Diameter 110 mm Height (incl. connection thread) 95 mm Weight 450g ± 1.5% Shelf Life 10 years Breathing Resistance @ 30 l/min: <190 Pa@ 95 l/min: <870 Pa Connection Thread (EN 148-1) Rd 40×1/7” - Order code 1640 Connection Thread (GOST 876275) OZ 40×4mm - Order code 2640 Recommended Storage Conditions Temperature: -5°C to +30°CHumidity: <80%