Page 116 - Praxair - Specialty Gases and Equipment Reference Guide

Hydrogen

Balance (M)SDS (M)SDS Regulator Page
Gas Range Recommendations
Air 5 ppm - 3.2 % P-18-0015-C Single Stage PRS40023331-CGA E •245
Argon 1 ppm - 2.9% P-18-0331-B Two Stage PRS40123331-CGA E •244
2.91 - 49.9% P-18-0337-A (1) Line PRS40052001-000 E •246
Helium 1 ppm - 3.9% P-18-0113-A
3.91 - 49.9% P-18-0125-A (1)
Nitrogen 1 ppm - 5.7% P-18-0111
5.8 - 49.9% P-18-0250-A (1)

Balance Concentration CGA Praxair Grades* Cylinder Pressure Contents
Gas Range E N M P C U Style psig ft 3 m 3
Air 1 ppm - 2.0% 590 • • • AS 2000 146 4.13
• • • AQ 2200 84 2.38
• • • A3 2200 32 0.91
• • • K 2000 215 6.09
• • • Q 2000 72 2.04
L.E.L. 4.0% • • • G 2000 36 1.02
Argon 1 ppm - 99.9% 350 • • • AS 2000 153 4.33
• • • AQ 2200 89 2.52
• • • A3 2200 33 0.93
• • • K 2000 226 6.40
• • • Q 2000 75 2.12
• • • Q 2000 38 1.08
Helium 1 ppm - 99.9% 350 • • • AS 2000 135 3.82
• • • AQ 2200 78 2.21
• • • A3 2200 29 0.82
• • • K 2000 199 5.64
• • • Q 2000 67 1.90
• • • Q 2000 34 0.96
Nitrogen 1 ppm - 99.9% 350 • • • AS 2000 142 4.02
• • • AQ 2200 82 2.32
• • • A3 2200 31 0.88
• • • K 2000 209 5.92
• • • Q 2000 70 1.98
• • • Q 2000 35 0.99
(1) For concentrations above 50%, the (M)SDS for the inverse mixture applies (i.e. Argon in Hydrogen).
* Key for Praxair Mixture Grades (Refer to page C •92 for complete specification details.) Section C – Mixtures
EPA (E), Primary Master (PM), Certified Master (CM), Primary Standard (P),
Certified Standard (C), Non-Certified Standard (U)

1-877-PRAXAIR www.praxairdirect.com C•115