---
title: "A2 Filter cartridge – 300 Series"
url: "https://www.rsgsafety.com/product/a2-class-1-filter-cartridge/"
type: "product"
published: "2024-04-03T14:31:45+00:00"
modified: "2026-04-28T07:21:13+00:00"
author: "Bart"
---

**RSG Safety manufactures a wide range of filter cartridges & canisters protecting from toxic industrial chemicals in the form of gases, vapors and particles.**

**Bayonet connection **

- Intuitive connection allows a fast and safe fastening of the mask.
- locking mechanism that allows the user to know if the filter has been placed correctly.

 

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

**Compatible with**

- [RSG 300 Series Half masks](https://rsgsafety.com/product/300-e-series-half-mask/)