Page 117 - Praxair - Specialty Gases and Equipment Reference Guide

Hydrogen Sulfide

Balance (M)SDS (M)SDS Regulator Page
Gas Range Recommendations
Air 5 - 1000 ppm P-18-0135-A Single Stage PRS40223331-CGA E •248
Helium 0.1 ppm - 4.6% P-18-0068-A Two Stage PRS40323331-CGA E •247
4.7 - 10% P-18-0468 Line PRS40252001-000 E •249
Hydrogen 1 ppm - 10% P-18-0333
Methane 1 ppm - 3% P-18-0123-B
Nitrogen 1 ppm - 6.7% P-18-0105-A
6.71 - 14.23% P-18-0469-A

Balance Concentration CGA Praxair Grades* Cylinder Pressure Contents
Gas Range E N M P C U Style psig ft 3 m 3
Air 0.2 ppm - 2.15% 330 • • • • • • AS 2000 146 4.13
(1)
• • • • • • AQ 2200 84 2.38
L.E.L. 4.3% • • • • • • A3 2200 32 0.91
Helium 0.2 ppm - 50% 330 • • • AS 2000 135 3.82
• • • AQ 2200 78 2.21
• • • A3 2200 29 0.82
Hydrogen 0.2 ppm - 50% 330 • • • AS 2000 133 3.77
• • • AQ 2200 77 2.18
• • • A3 2200 29 0.82
Methane 0.2 ppm - 50% 330 • • • AS 2000 173 4.90
• • • AQ 2200 100 2.83
• • • A3 2200 38 1.08
Nitrogen 0.2 ppm - 50% (1)(2) 330 • • • • • • AS 2000 209 5.92
• • • • • • AQ 2200 70 1.98
• • • • • • A3 2200 35 0.99
(1) Available concentrations for NIST traceable mixtures to be determined by available reference materials.
(2) Cylinder pressure and contents will vary proportionately at higher concentrations.
* Key for Praxair Mixture Grades (Refer to page C •92 for complete specification details.)
EPA (E), Primary Master (PM), Certified Master (CM), Primary Standard (P),
Certified Standard (C), Non-Certified Standard (U)

Section C – Mixtures

C•116 1-877-PRAXAIR www.praxairdirect.com