Page 156 - Praxair - Specialty Gases and Equipment Reference Guide

Engine Emissions

Nitrogen

Product/Grade Purity Part Cylinder O 2 H 2 0 CO 2 CO THC NOx N 2 O SO 2
Number Style
CEM Zero, 5.5 99.9995%* NI 5.5CE AS, AQ, A3 < 0.5 < 2 < 1 < 0.5 < 0.1 < 0.1 – < 0.1
Ultra Zero Ambient 99.999%* NI 5.0UM T, K, AS, AQ < 2 < 2 < 0.5 < 0.1 < 0.5 < 0.02 – < 0.005
Monitoring, 5.0 (1)
Volatile Organic 99.999%* NI 5.0VC AS, AQ, A3 < 2 < 2 < 0.3 < 0.01 < 0.1 – – < 0.01
Compound Free, 5.0 (2)
Ultra High Purity, 5.0 99.999%* NI 5.0UH T, K, Q, < 1 < 3 – – < 0.5 – – –
Vehicle Emission 99.998%* NI 4.8VE T, K, AS, AQ < 0.5 < 1 < 1** < 0.5 < 0.1 < 0.1 – –
Zero, 4.8 (3)
Vehicle Emission 99.999%* NI 5.01065 T, K, AS, AQ ≤ 2 – ≤ 10 ≤ 1 ≤ 0.05 ≤ 0.02 ≤ 0.02 –
Zero (1065), 5.0
(4)
* Argon free basis.
** Available with 315-385 ppm CO 2 on request.
(1) SF 6 < 0.001 ppm.
(2) Can be individually analyzed for customer selected VOC components.
(3) Complies with Title 40 CFR 86 114.79. For other applications, alternative specifications may apply.
(4) Complies with Title 40 CFR Part 1065.750
Other Nitrogen grades available upon request.
Additional nitrogen grades are listed on page B •65.
Concentrations given are ppm by volume unless otherwise specified. Engine Emissions
Maximum ppm unless otherwise noted.

Multi-Gas Point-of-Use Panels High Purity Stainless Steel Tubing
Praxair’s Multi-Gas Point-of-Use Panels High purity piping systems utilize 316L stainless steel
allow gases to be effectively pressure- that is orbitally arc welded to ensure the cleanest delivery
controlled to one or multiple instruments system possible. High Purity Stainless Steel Tubing can be
or use points in your test area. See page designed and integrated into any analyzer configuration
E•303 for complete details. and is EPA Part 1065 compliant. Contact your local
Praxair representative for details.

1-877-PRAXAIR www.praxairdirect.com D•155