Acidic Gas Filter Cartridge (E1)
Basic Information
Filter Class: Type E (yellow marking)
Protection Level: class 1
Conformity Standard: GB 2890-2022
Materials: High-strength ABS, activated carbon
Core Performance
Protected Contaminants: Sulfur dioxide, nitrogen oxides, and other acid gases and vapors
Test Medium: Sulfur dioxide (SO₂)
Grade 1 Protection Time: ≥ 25 minutes (at a test concentration of 2.7 mg/L)
Identification Color: Yellow
Protection Principle: Chemical adsorption and physical filtration by impregnated activated carbon
Application Environment
Suitable for use in industrial environments including chemical processing, construction, mining, shipbuilding, and other settings where exposure to low concentrations of acid gases and vapors may occur. Designed for workable oxygen environments where oxygen concentration is at least 19.5%.
Classification & Marking
Type Code: E
Color: Yellow
Purpose: Protection against acid gases and vapors
Level Designation: E1
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