Page 132 - Praxair - Specialty Gases and Equipment Reference Guide

Sulfur Dioxide

Balance (M)SDS (M)SDS Regulator Page
Gas Range Recommendations
Air 0.1 ppm - 8% P-18-0059-A Single Stage PRS40223331-CGA E •248
Helium 0.2 ppm - 1% P-18-0072 Two Stage PRS40323331-CGA E •247
Nitrogen 1 ppm - 20% P-18-0208-A Line PRS40252001-000 E •249

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 - 20% 660 • • • AS 2000 146 4.13
• • • AQ 2200 84 2.38
• • • A3 2200 32 0.91
Helium 1 ppm - 20% 660 • • • AS 2000 135 3.82
• • • AQ 2200 78 2.21
• • • A3 2200 29 0.82
Nitrogen 1 ppm - 20% 660 • • • • • • AS 2000 142 4.02
(1)
• • • • • • AQ 2200 82 2.32
• • • • • • A3 2200 31 0.88
(1) Available concentrations for NIST traceable mixtures to be determined by available reference materials.
* 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)

1-877-PRAXAIR www.praxairdirect.com C•131 Section C – Mixtures