The Importance of Air Purity in Breathing Systems


Divers and fire rescue personnel understand the importance of properly working equipment.  It could mean the difference between life and death.  Typical modern air purity standards set the range for acceptable levels for air purity standards. The quality of air filter replacement parts and compressor filter cartridges can make the difference in meeting these rigorous standards.


Air Purity Standards

Currently, divers breathing air purity standard EN12021 sets limits at:

  • Oxygen—between 20-23%
  • Carbon Dioxide—less than 500ppm
  • Oil—less than 0.5mg/m^3
  • Carbon Monoxide—less than 15ppm
  • Water Vapor—less than 50mg/m^3 for 40-200 bars
  • Water Liquid—no free water present
  • Odor & Taste—none
  • Particles—none


Discount Lawrence Factor, a leader in the air and gas purification industry, stocks a complete line of compressor parts at discounted prices.  With a wide variety of brand names to choose from, the online store at provides divers a broad selection of choices for breathing systems such as:

  • Air Testing
  • Filter Towers
  • Oil & Media
  • Purification Cartridges & Filters
  • Spare Parts


Brand Names

For use in fire rescue or Scuba diving equipment, some of the biggest names in OEM and aftermarket filter manufacturing of compressed air systems and compressor parts can be found at Discount Lawrence Factor’s online store.

  • Aero Dri/Keco/Gannon
  • Air Dry
  • Alkin
  • Allied Air Products
  • Alta Robbins
  • American Bristol/Scott
  • Bristol Pneumatics
  • Coltri/Max Air/Nuvair
  • Deltech/Del-Monox
  • Eagle Compressor
  • Fluid Concepts
  • Fresh Air
  • Hamworthy England
  • Ingersol Rand
  • Innerspace Research
  • Jordair
  • L and W
  • L-Factor
  • Mako/Comp Air
  • Midland Diving Equipment
  • Nardi
  • North American
  • Schifauer & Pek


Discount Lawrence Factor

Whatever parts are needed to ensure the safety of vital breathing air systems, Discount Lawrence Factor’s selection of breathing air filters or compressor filter cartridges makes finding the perfect part a breeze.  Highly effective and thoroughly tested by the U.S. Department of Defense, X-pendable filter cartridges are recognized around the world as the foremost leader in filters for mission-critical compressors and breathing systems.

No matter what is needed for a properly working breathing system, drop by Discount Lawrence Factor’s website and peruse the extensive selection of quality discounted compressor parts and accessories.