Page 132 - Praxair - Specialty Gases and Equipment Reference Guide
P. 132

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
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