Page 4 - Specialty Gases & Equipment Solutions

Praxair can provide the EPA protocols for your environmental testing such as:

Component Balance Concentration Certification Period CGA 4000 Series regulator
Ammonia Nitrogen 5 - 50 ppm 1 705 Corrosive
Carbon Dioxide Air 360 - 420 ppm 8 590 Non-corrosive
Carbon Dioxide Nitrogen 5 ppm - 20% 8 580 Non-corrosive
Carbon Monoxide Air 2.5 ppm - 10% 8 590/350 Non-corrosive
Carbon Monoxide Nitrogen 2.5 ppm - 15% 8 590/350 Non-corrosive
Formaldehyde Nitrogen 0.5 - 10 ppm 1 330 Corrosive
Hydrogen Chloride Nitrogen 10 - 5000 ppm 2 330 Corrosive
Hydrogen Sulfide Nitrogen 1 - 1000 ppm 3 330 Corrosive
Methane Air 1 - 1000 ppm 8 590/350 Non-corrosive
Methane Nitrogen 1 ppm - 10% 8 590/350 Non-corrosive
Methanol or Ethanol Air/Nitrogen 75 - 500 ppm 4 350 Non-corrosive
Natural Gas Natural Gas Varies 4 350 Non-corrosive
Nitric Oxide Nitrogen 0.5 - 50 ppm 3 660 Corrosive
Nitric Oxide Nitrogen 50 ppm - 1% 8 660 Corrosive
Nitrous Oxide Air 1 ppm - 5% 8 590 Non-corrosive
Oxides of Nitrogen Air 3 ppm - 1% 3 660 Corrosive
Oxides of Nitrogen Nitrogen 10 - 1000 ppm 2 660 Non-corrosive
Oxygen Nitrogen 10 ppm - 25% 8 590 Non-corrosive
Propane Air 0.1 - 500 ppm 8 590 Non-corrosive
Propane Nitrogen 1 ppm - 2% 8 350 Non-corrosive
Sulfur Dioxide Air 10 -100 ppm 2 660 Corrosive
Sulfur Dioxide Air 100 -1000 ppm 3 660 Corrosive
Sulfur Dioxide Nitrogen 1 -50 ppm 4 660 Corrosive
Sulfur Dioxide Nitrogen 50 ppm - 1% 8 660 Corrosive

TM
PortaGreen : Innovative and sustainable cylinders
PortaGreen is our line of recyclable and sustainable gas cylinders for calibration standard and zero gas needs. Available in
various sizes, the PortaGreen cylinders are more compact than standard cylinders and can be conveniently returned using
SM
our exclusive Strip & Ship Program. The Strip & Ship Program reduces the work – and the cost – associated with standard
cylinder disposal.

PortaGreen Features and Benefits:
■ ■ Improves cylinder handling ■ ■ Easy to return ■ ■ Reduced carbon footprint

Step 1 Step 2 Step 3

Make sure gauge Strip off Place in
reads zero. content label tube for return
Remove regulator layer to reveal shipping.
for shipping. return label.

Contact our Specialty Gas experts for
more information today!
800.225.8247 specialty_gas_support@praxair.com praxair.ca