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    Gas Select gas list

    Gas Select™ gas list for Alicat mass flow meters and controllers

    Most Alicat gas mass flow meters and mass flow controllers come standard with an onboard library of up to 130 pure and mixed gas calibrations called Gas Select. Users may switch between selected gases on the fly without any need for recalibration of the mass flow meter or controller.

    Any of the preloaded gases may also be used to generate new mixed gas calibrations using COMPOSER, the gas composition firmware that is part of Gas Select.

    Here is the complete list of preloaded gases and their properties, including absolute viscosity, density, and compressibilty at both 25°C and 0°C.

    Preloaded gases and their properties

     

    • Acetylene (C2H2)
    • Air
    • Argon (Ar)
    • i-Butane (i-C4H10)
    • n-Butane (n-C4H10)
    • Carbon dioxide (CO2)
    • Carbon monoxide (CO)
    • Deuterium (D2)
    • Ethane (C2H6)
    • Ethylene/Ethene (C2H4)
    • Helium (He)
    • Hydrogen (H2)
    • Krypton (Kr)
    • Methane (CH4)
    • Neon (Ne)
    • Nitrogen (N2)
    • Nitrous Oxide (N2O)
    • Oxygen (O2)
    • Propane (C3H8)
    • Sulfur Hexafluoride (SF6)
    • Xenon (Xe)

    • 5% CH4 95% CO2
    • 10% CH4 90% CO2
    • 15% CH4 85% CO2
    • 20% CH4 80% CO2
    • 25% CH4 75% CO2
    • 30% CH4 70% CO2
    • 35% CH4 65% CO2
    • 40% CH4 60% CO2
    • 45% CH4 55% CO2
    • 50% CH4 50% CO2
    • 55% CH4 45% CO2
    • 60% CH4 40% CO2
    • 65% CH4 35% CO2
    • 70% CH4 30% CO2
    • 75% CH4 25% CO2
    • 80% CH4 20% CO2
    • 85% CH4 15% CO2
    • 90% CH4 10% CO2
    • 95% CH4 5% CO2

    • EAN-32 (32% O2+68% N2)
    • EAN-36 (36% O2+64% N2)
    • EAN-40 (40% O2+60% N2)
    • EA-40 (40% O2+60% Air)
    • EA-60 (60% O2+40% Air)
    • EA-80 (80% O2+20% Air)
    • Heliox-20 (20% O2+80% He)
    • Heliox-21 (21% O2+79% He)
    • Heliox-30 (30% O2+70% He)
    • Heliox-40 (40% O2+60% He)
    • Heliox-50 (50% O2+50% He)
    • Heliox-60 (60% O2+40% He)
    • Heliox-80 (80% O2+20% He)
    • Heliox-99 (99% O2+1% He)
    • Metabolic Exhalant (16% O2+78.04% N2+5% CO2+0.96% Ar)

    • P-5 (5% CH4+95% Ar)
    • P-10 (10% CH4+90% Ar)

    • Coal Gas 50% H2+35% CH4+10% CO+5% C2H4
    • Endothermic Gas 75% H2+25% N2
    • HHO 66.67% H2+33.33% O2
    • LPG HD-5 96.1% C3H8+1.5% C2H6+0.4% C3H6+1.9% n-C4H10
    • LPG HD-10 85% C3H8+10% C3H6+ 5% n-C4H10
    • Nat Gas 1 93% CH4+3% C2H6+1% C3H8+2% N2+1% CO2
    • Nat Gas 2 95% CH4+3% C2H6+1% N2+ 1% CO2
    • Nat Gas 3 95.2% CH4+2.5% C2H6+0.2% C3H8+0.1% C4H10+1.3% N2+0.7% CO2
    • Syn Gas 1 40% H2+29% CO+20% CO2+11% CH4
    • Syn Gas 2 64% H2+28% CO+1% CO2+7% CH4
    • Syn Gas 3 70% H2+4% CO+25% CO2+1% CH4
    • Syn Gas 4 83% H2+14% CO+3% CH4

    • 4.5% CO2+13.5% N2+82% He
    • 6% CO2+14% N2+80% He
    • 7% CO2+14% N2+79% He
    • 9% CO2+15% N2+76% He
    • 9.4% CO2+19.25% N2+71.35% He
    • 9% Ne+91% He

    • 89% O2+7% N2+4% Ar
    • 93% O2+3% N2+4% Ar
    • 95% O2+1% N2+4% Ar

    • 2.5% O2+10.8% CO2+85.7% N2+1% Ar
    • 2.9% O2+14% CO2+82.1% N2+1% Ar
    • 3.7% O2+15% CO2+80.3% N2+1% Ar
    • 7% O2+12% CO2+80% N2+1% Ar
    • 10% O2+9.5% CO2+79.5% N2+1% Ar
    • 13% O2+7% CO2+79% N2+1% Ar

    • C-2 (2% CO2+98% Ar)
    • C-8 (8% CO2+92% Ar)
    • C-10 (10% CO2+90% Ar)
    • C-15 (15% CO2+85% Ar)
    • C-20 (20% CO2+80% Ar)
    • C-25 (25% CO2+75% Ar)
    • C-50 (50% CO2+50% Ar)
    • C-75 (75% CO2+25% Ar)
    • He-25 (25% He+75% Ar)
    • He-50 (50% He+50% Ar)
    • He-75 (75% He+25% Ar)
    • He-90 (90% He+10% Ar)
    • A1025 (90% He+7.5% Ar+2.5% CO2)
    • Stargon CS (90% Ar+8% CO2+2% O2)

    *These gases require S-Series instruments (MS/MCS/PS/PCS).

    • Ammonia (NH3)
    • Butylene (1-Butene)
    • Cis-Butene (cis-2-Butene)
    • Iso-Butene
    • Trans-Butene
    • Carbonyl Sulfide (COS)
    • Chlorine (Cl2)
    • Dimethylether (CH3OCH3)
    • Hydrogen Sulfide (H2S)
    • Nitrogen Trifluoride (NF3)
    • Nitric Oxide (NO)
    • Propylene (C3H6)
    • Silane (SiH4)
    • Sulfur Dioxide (SO2)

    *These gases require S-Series instruments (MS/MCS/PS/PCS).

    • R-11 Trichlorofluoromethane (CCl3F)
    • R-14 Tetrafluoromethane (CF4)
    • R-22 Difluoromonochloromethane (CHClF2)
    • R-23 Trifluoromethane (CHF3)
    • R-32 Difluoromethane (CH2F2)
    • R-115 Chloropentafluoroethane (C2ClF5)
    • R-116 Hexafluoroethane (C2F6)
    • R-124 Chlorotetrafluoroethane (C2HClF4)
    • R-125 Pentafluoroethane (C2HF5)
    • R-134A Tetrafluoroethane (CH2FCF3)
    • R-142B Chlorodifluoroethane (CH3CClF2)
    • R-143A Trifluoroethane (C2H3F3)
    • R-152A Difluoroethane (C2H4F2)
    • RC-318 Octafluorocyclobutane (C4F8)
    • R-404A (44% R-125+4% R-134A+52% R-143A)
    • R-407C (22% R-32+25% R-125+52% R-134A)
    • R-410A (50% R-32+50% R-125)
    • R-507A (50% R-125+50% R-143A)