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Sku: 08-420-01

Made in USA. Ships Free.

RPB Parts Number 08-420-01, 08-420-02, 08-420-03, 08-420-04

Replacement Sensor Cartridges for the GX4® Gas Monitor from RPB® Safety. Select:

  1. Part # 08-420-01: Carbon Monoxide (CO) 10ppm Alarm Level
  2. Part # 08-420-02: Carbon Monoxide  (CO)  5ppm  Alarm Level
  3. Part # 08-420-03: Hydrogen Sulfide (H2S) 10ppm  Alarm Level
  4. Part # 08-420-04: Oxygen (O) 19.5% - 23%  Alarm Level



Other cartridges are available. Please call (833) 408-0500 or email

Made in USA.

About RPB
      1. Made in Michigan from local and globally sourced components
      2. Find RPB parts here or instruction manuals here
      3. Questions? Call (833) 408-0500



About RPB®

PPE made in America

See all RPB Respiratory Protection and Safety Essentials

In their words - Protecting you for life's best moments® by creating the world's best industrial respirators that advance your safety & increase your productivity. Established in the 1970's, RPB's Special Operations Unit has been developing disruptive innovation for 40 years. An R&D group comprised of PPE innovators, users & advocates, we specialize in air supplied respirators, air line filters, monitoring equipment, & safety essentials.

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