Page 118 - Praxair - Specialty Gases and Equipment Solutions
P. 118

Isobutane






            Balance             (M)SDS               (M)SDS              Regulator                        Page
            Gas                 Range                                    Recommendations
            Air                 1 - 6000 ppm         P-18-0089           Single Stage   PRS40023331-CGA   E •245
            Helium              1 ppm - 1%           P-18-0096           Two Stage     PRS40123331-CGA    E •244
            Nitrogen            1.9 - 10%            P-18-0114-A         Line          PRS40052001-000    E •246


              Balance     Concentration     CGA    Praxair Grades*      Cylinder  Pressure   Contents
              Gas         Range                    E  N   M   P  C   U  Style     psig       ft 3    m 3
              Air         0.5 - 5000 ppm    590               •   •   •   AS      2000       146     4.13
                                      (1)
                                                              •   •   •   K       2000       215     6.09
                          L.E.L. 1.8%                         •   •   •   Q       2000         72    2.04
              Helium      1 ppm - 99.9%     350               •   •   •   AS      2000       135     3.82
                                     (1)
                                                              •   •   •   K       2000       199     5.64
                                                              •   •   •   Q       2000         67    1.90
              Nitrogen    1 ppm - 99.9%     350               •   •   •   AS      2000       135     3.82
                                     (1)
                                                              •   •   •   K       2000       199     5.64
                                                              •   •   •   Q       2000         67    1.90
              (1)   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)












































            1-877-PRAXAIR                     www.praxairdirect.com                                        C•117    Section C – Mixtures
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