Page 121 - Praxair - Specialty Gases and Equipment Reference Guide
P. 121

Methane






            Balance             (M)SDS               (M)SDS              Regulator                        Page
            Gases               Range                                    Recommendations
            Air                 1 ppm - 2.5%         P-18-0101           Single Stage   PRS40023331-CGA   E •245
            Argon               0.1 ppm - 10%        P-18-0097-B         Two Stage     PRS40123331-CGA    E •244
                                10.1 - 50%           P-18-0128-A         Line          PRS40052001-000    E •246
            Helium              1 ppm - 10.1%        P-18-0098-A
                                10.2 - 49.9%         P-18-0129-A
            Hydrogen            1 ppm - 50%          P-18-0116
            Nitrogen            0.1 ppm - 14.3%      P-18-0110-B
                                14.31 - 49.9%        P-18-0506


              Balance     Concentration     CGA    Praxair Grades*         Cylinder   Pressure   Contents
              Gas         Range                    E  N   M   P  C   U  Style     psig       ft 3    m 3
              Air         0.1 ppm - 2.5%  (1)(2)    590   •   •   •   •   •   •   AS   2000   146    4.10
                                                   •   •   •   •   •   •   AQ     2200         84    2.40
                                                   •   •   •   •   •   •   A3     2200         32    0.90
                                                   •   •   •   •   •   •   K      2000       215     6.09
                                                   •   •   •   •   •   •   Q      2000         72    2.04
                          L.E.L. 5%                •   •   •   •   •   •   G      2000         36    1.02
              Argon       0.1 ppm - 50%     350               •   •   •   AS      2000       153     4.33
                                     (1)
                                                              •   •   •   AQ      2200         89    2.52
                                                              •   •   •   A3      2200         33    0.93
                                                              •   •   •   K       2000       226     6.40
                                                              •   •   •   Q       2000         75    2.12
                                                              •   •   •   G       2000         38    1.08
              Helium      0.1 ppm - 50%     350               •   •   •   AS      2000       135     3.82
                                     (1)
                                                              •   •   •   AQ      2200         78    2.21
                                                              •   •   •   A3      2200         29    0.82
                                                              •   •   •   K       2000       199     5.64
                                                              •   •   •   Q       2000         67    1.90
                                                              •   •   •   G       2000         34    0.96
              Hydrogen    0.1 ppm - 50%     350               •   •   •   AS      2000       133     4.10
                                     (1)
                                                              •   •   •   AQ      2200         77    2.40
                                                              •   •   •   A3      2200         29    0.90
                                                              •   •   •   K       2000       196     5.55
                                                              •   •   •   Q       2000         65    1.84
                                                              •   •   •   G       2000         33    0.94
              Nitrogen    0.1 ppm - 50%  (1)(2)    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
                                                   •   •   •   •   •   •   G      2000         36    1.02
              (1)   For concentrations above 50%, the (M)SDS for the inverse mixture applies (i.e. Argon in Methane).
              (2)   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),
     Section C – Mixtures
                Certified Standard (C), Non-Certified Standard (U)



           C•120                              1-877-PRAXAIR                     www.praxairdirect.com
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