Ammonia-protected cartridge (K2)
Basic Information
- Product Type: Gas filter cartridge for non-powered air-purifying respirators
- Filter Class: Type K (green marking)
- Protection Level: Grade 2
- Conformity Standard: GB 2890-2022
- Materials: High-strength ABS shell, specially impregnated activated carbon
- Interface: RD40 Standard Interface
Core Performance
- Protected Contaminants: Ammonia, organic amines, and other alkaline gases/vapors
- Test Medium: Ammonia (NH₃)
- Grade 2 Protection Time: ≥ 25 minutes (at a test concentration of 2.1 mg/L)
- Identification Color: Green
- Protection Principle: Specific chemical adsorption of alkaline gases via impregnated activated carbon, paired with physical filtration
Application Environment
Suitable for industrial scenarios such as pharmaceutical manufacturing, fertilizer production, refrigeration maintenance, livestock farming, and cleaning operations where exposure to low-to-medium concentration alkaline gases is present. Applicable in oxygen-enriched workable environments with oxygen concentration not lower than 19.5%.
Classification & Marking
- Type Code: K
- Color: Green
- Purpose: Protection against alkaline gases and vapors
- Level Designation: K2
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