Gas Select™ gas list for Alicat mass flow instruments

Alicat offers three lines of mass flow meters and controllers:

Alicat laminar DP gas mass flow meters and controllers (M/MC-Series) are equipped with Gas Select, an onboard library with 98-130 gases. Any of the pre-loaded gases may also be used to generate and store up to 20 mixed gas calibrations using Composer. With just one instrument, users can measure each gas at the same accuracy specification – without recalibration, thanks to laminar DP technology.
Alicat BASIS™ MEMS thermal mass flow instruments are equipped with a shorter 9-gas list, specified below. Switching between gases will change measurement accuracy.
Alicat CODA Coriolis mass flow instruments are compatible with an even longer list of fluids but are not equipped with Gas Select, since fluid composition does not need to be known for accurate measurement.

View the list of preloaded gases and their properties for Alicat laminar DP mass flow instruments, including absolute viscosity, density, and compressibility at both 25°C and 0°C here: Pre-loaded gases and properties (PDF)

The complete list for standard and anticorrosive Alicat laminar DP flow instruments and BASIS MEMS thermal flow instruments can be found below.

Standard gas list

Pure gases

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)

Bioreactor gases

Name: 5% CH₄ + 95% CO₂
- Short Name: Bio5M
Name: 10% CH₄ + 90% CO₂
- Short Name: Bio10M
Name: 15% CH₄ + 85% CO₂
- Short Name: Bio15M
Name: 20% CH₄ + 80% CO₂
- Short Name: Bio20M
Name: 25% CH₄ + 75% CO₂
- Short Name: Bio25M
Name: 30% CH₄ + 70% CO₂
- Short Name: Bio30M
Name: 35% CH₄ + 65% CO₂
- Short Name: Bio35M
Name: 40% CH₄ + 60% CO₂
- Short Name: Bio40M
Name: 45% CH₄ + 55% CO₂
- Short Name: Bio45M
Name: 50% CH₄ + 50% CO₂
- Short Name: Bio50M
Name: 55% CH₄ + 45% CO₂
- Short Name: Bio55M
Name: 60% CH₄ + 40% CO₂
- Short Name: Bio60M
Name: 65% CH₄ + 35% CO₂
- Short Name: Bio65M
Name: 70% CH₄ + 30% CO₂
- Short Name: Bio70M
Name: 75% CH₄+ 25% CO₂
- Short Name: Bio75M
Name: 80% CH₄ + 20% CO₂
- Short Name: Bio80M
Name: 85% CH₄ + 15% CO₂
- Short Name: Bio85M
Name: 90% CH₄ + 10% CO₂
- Short Name: Bio90M
Name: 95% CH₄ + 5% CO₂
- Short Name: Bio95M

Breathing gases

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)

Chromatography gases

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

Fuel gases

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

Laser gases

Name: 4.5% CO₂+ 13.5% N₂+ 82% He
- Short Name: LG-4.5
Name: 6% CO₂+ 14% N₂+ 80% He
- Short Name: LG-6
Name: 7% CO₂+ 14% N₂+ 79% He
- Short Name: LG-7
Name: 9% CO₂+15% N₂+ 76% He
- Short Name: LG-9
Name: 9.4% CO₂+ 19.25% N₂+ 71.35% He
- Short Name: LG-9.4
Name: 9% Ne + 91% He
- Short Name: HeNe-9

O2 concentrator gases

Name: 89% O₂+ 7% N₂+ 4% Ar
- Short Name: OCG-89
Name: 93% O₂+ 3% N₂+ 4% Ar
- Short Name: OCG-93
Name: 95% O₂+ 1% N₂+ 4% Ar
- Short Name: OCG-95

Stack/fuel gases

Name: 2.5% O₂+ 10.8% CO₂+ 85.7% N₂+ 1% Ar
- Short Name: FG-1
2.9% O₂+ 14% CO₂+ 82.1% N₂+ 1% Ar
- Short Name: FG-2
3.7% O₂+ 15% CO₂+ 80.3% N₂+ 1% Ar
- Short Name: FG-3
7% O₂+ 12% CO₂+ 80% N₂+ 1% Ar
- Short Name: FG-4
10% O₂+ 9.5% CO₂+ 79.5% N₂+ 1% Ar
- Short Name: FG-5
13% O₂+ 7% CO₂+ 79% N₂+ 1% Ar
- Short Name: FG-6

Welding gases

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)

Corrosive gas list

Pure corrosive gases

*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)

Refrigerant gases