home contact us
about us quality products services

single-component
multi-component
epa protocols
available components
 


-we tried two other nation-wide epa protocol gas vendors.  the first couldn't meet delivery... the second was not accurate.  this resulted in major calibration to the system and caused us to fail our quarterly test.  scott-marrin has always treated us as though we were the most important customer they have.  in over 4 years of using scott-marrin gas, we have never had a reason to question product quality.

-michael olbrisch
electronics specialist

 


epa protocol gas

scott-marrin was one of the first companies in the united states to make epa protocol gases commercially available for environmental monitoring purposes.  since the mid 1970's, scott-marrin was manufacturing low-level mixtures in nitrogen and ultrapure air packaged exclusively in aluminum cylinders.  epa protocol gas mixtures resulted in an excellent fit for our current area of expertise.

epa protocol mixtures are analyzed in accordance with "epa traceability protocol for assay and certification of gaseous calibration standards" document number epa-600/r97/121 revised september 1997.  all mixtures are traceable to the national institute of standards and technology (nist) gaseous standard reference materials (srm) using epa procedures, and meet or exceed the appropriate epa protocol specifications for accuracy.

a certificate of analysis is provided with each mixture.  the coa contains the replicate analysis data, the nist traceable reference standard and the analytical instrument used in the analysis.

below is a listing of individual components and their epa ranges.  if you do not see your requirements listed below, give us a call for assistance.
 

single component epa protocol ranges
 

component name

epa  range

balance

carbon dioxide

2500 ppm - 30 mole-%

air or nitrogen

carbon monoxide

5 ppm - 10 mole-%

air or nitrogen

hydrogen sulfide

10 ppm - 40 ppm

air or nitrogen

methane

2 ppm - 20 ppm

air or nitrogen

nitric oxide

2.5 ppm - 5000 ppm

o2 free nitrogen

oxygen

0.5 mole-% - 25 mole-%

nitrogen

propane

3 ppm - 9990 ppm

air or nitrogen

sulfur dioxide

13 ppm - 5000 ppm

air or nitrogen

multi-component epa protocol ranges
 

non-reactive:

component name

typical range

balance

carbon dioxide

2500 ppm - 30 mole-%

air or nitrogen

carbon monoxide

5 ppm - 10 mole-%

air or nitrogen

methane

2 ppm - 20 ppm

air or nitrogen

oxygen

0.5 ppm - 25 mole-%

nitrogen

propane

3 ppm - 9990 ppm

air or nitrogen

reactive:

component name

typical range

balance

nitric oxide

2.5 ppm - 5000 ppm

o2 free nitrogen

sulfur dioxide

13 ppm - 5000 ppm

air or nitrogen

 
scott-marrin, inc. 6531 box springs blvd. riverside, ca 92507
tel: (951) 653-6780
sales@scottmarrin.com
copyright 2003-2005 smi. all rights reserved