5. SG Products
5.3 Stable Isotope
Research of isotopic signatures is continuing to increase in various areas. These signatures have become more useful tools for a more comprehensive understanding of pollution sources. To aid in this essential research, Air Liquide has developed a range of reference gases for isotope ratio measurements. The five most commonly used elements (C,O,H,N, and S) in stable isotope research are currently available with large range of isotopic ratios.
High analytical accuracy of the isotopic ratio, required composition and targeted isotope signature for various pure gases and mixtures Increased analyzer calibration efficiency Isotopic composition adjusted for each of your products, matching International standardized values.
Rely on an expert partner for your measurements
Understanding the long term changes in the atmospheric composition as well as the origin of pollutants is critical for predicting the impacts on the world and the people in it. To do this, having comparable results from the various measurement locations around the world is essential. The global scientific community has therefore developed advanced and standardized analytical methods, including isotopic analysis. Isotopic signatures have become useful tools for a more comprehensive understanding of pollution sources. To aid in this essential research, Air Liquide has developed a range of stable ratio reference gases for Atmosphere monitoring analysis. Our Natural Air product features the same specifications as the Natural Air reference gas defined by the World Meteorological Organization (WMO). Air Liquide is the first and only gas supplier to propose a complete standardized offer for stable isotopic analysis globally. With 30+ years of experience in production of specialty gases and applications, as well as strong recognized R&D capabilities, you can trust Air Liquide to ensure product quality, availability and responsiveness.
Applications for Isotope Mixtures
Food & Beverage
- Fabrication
- R&D
- Food Controls
Medicine
- Metabolism
- Drugs
- Diagnosis
Earth & Environment Science
- Archaeology
- Ecology
- Paleoclimatology
- Hydrology
Industrial Lightning
- Lightning & Laser
| Gas | Formula | Balance | Conc. (ppm) | δ13C (‰ VPDB) |
|---|---|---|---|---|
Gas Carbon Dioxide |
Formula CO2 |
Balance Air |
Conc. (ppm) 300 |
δ13C (‰ VPDB) -40 ± 0.3 |
Gas Carbon Dioxide |
Formula CO2 |
Balance Air |
Conc. (ppm) 300 |
δ13C (‰ VPDB) -25 ± 0.3 |
Gas Carbon Dioxide |
Formula CO2 |
Balance Air |
Conc. (ppm) 300 |
δ13C (‰ VPDB) -5 ± 0.3 |
Gas Carbon Dioxide |
Formula CO2 |
Balance Air |
Conc. (ppm) 1500 |
δ13C (‰ VPDB) -40 ± 0.3 |
Gas Carbon Dioxide |
Formula CO2 |
Balance Air |
Conc. (ppm) 1500 |
δ13C (‰ VPDB) -25 ± 0.3 |
Gas Carbon Dioxide |
Formula CO2 |
Balance Air |
Conc. (ppm) 1500 |
δ13C (‰ VPDB) -5 ± 0.3 |
Gas Methane |
Formula CH4 |
Balance Air |
Conc. (ppm) 2 |
δ13C (‰ VPDB) -69 ± 0.5 |
Gas Methane |
Formula CH4 |
Balance Air |
Conc. (ppm) 10 |
δ13C (‰ VPDB) -69 ± 0.5 |
Gas Methane |
Formula CH4 |
Balance Air |
Conc. (ppm) 30 |
δ13C (‰ VPDB) -69 ± 0.5 |
Gas Methane |
Formula CH4 |
Balance Air |
Conc. (ppm) 500 |
δ13C (‰ VPDB) -69 ± 0.5 |
Gas Methane |
Formula CH4 |
Balance Air |
Conc. (ppm) 1000 |
δ13C (‰ VPDB) -69 ± 0.5 |
Gas Methane |
Formula CH4 |
Balance Air |
Conc. (ppm) 2 |
δ13C (‰ VPDB) -45 ± 0.5 |
Gas Methane |
Formula CH4 |
Balance Air |
Conc. (ppm) 10 |
δ13C (‰ VPDB) -45 ± 0.5 |
Gas Methane |
Formula CH4 |
Balance Air |
Conc. (ppm) 30 |
δ13C (‰ VPDB) -45 ± 0.5 |
Gas Methane |
Formula CH4 |
Balance Air |
Conc. (ppm) 500 |
δ13C (‰ VPDB) -45 ± 0.5 |
Gas Methane |
Formula CH4 |
Balance Air |
Conc. (ppm) 1000 |
δ13C (‰ VPDB) -45 ± 0.5 |
Gas Methane |
Formula CH4 |
Balance Air |
Conc. (ppm) 2 |
δ13C (‰ VPDB) -25 ± 0.5 |
Gas Methane |
Formula CH4 |
Balance Air |
Conc. (ppm) 10 |
δ13C (‰ VPDB) -25 ± 0.5 |
Gas Methane |
Formula CH4 |
Balance Air |
Conc. (ppm) 30 |
δ13C (‰ VPDB) -25 ± 0.5 |
Gas Methane |
Formula CH4 |
Balance Air |
Conc. (ppm) 500 |
δ13C (‰ VPDB) -25 ± 0.5 |
Gas Methane |
Formula CH4 |
Balance Air |
Conc. (ppm) 1000 |
δ13C (‰ VPDB) -25 ± 0.5 |
| Gas | Formula | δ15N (‰ atm N2) |
δ15N (alpha) (‰ atm N2) |
δ15N (beta) (‰ atm N2) |
δ18O (‰ VSMOW) |
Conc. (ppb) | Balance |
|---|---|---|---|---|---|---|---|
Gas Nitrous oxide |
Formula N2O |
δ15N (‰ atm N2) 2.2 ± 0.5 |
δ15N (alpha) (‰ atm N2) 3.2 ± 0.5 |
δ15N (beta) (‰ atm N2) 1.2 ± 0.5 |
δ18O (‰ VSMOW) 39.3 ± 1 |
Conc. (ppb) 300 |
Balance Syn. Air* |
Gas Nitrous oxide |
Formula N2O |
δ15N (‰ atm N2) 2.2 ± 0.5 |
δ15N (alpha) (‰ atm N2) 3.2 ± 0.5 |
δ15N (beta) (‰ atm N2) 1.2 ± 0.5 |
δ18O (‰ VSMOW) 39.3 ± 1 |
Conc. (ppb) 1500 |
Balance Syn. Air* |
Gas Nitrous oxide |
Formula N2O |
δ15N (‰ atm N2) -0.3 ± 0.5 |
δ15N (alpha) (‰ atm N2) - 0.4 ± 0.5 |
δ15N (beta) (‰ atm N2) -0.2 ± 0.5 |
δ18O (‰ VSMOW) 41.9 ± 1 |
Conc. (ppb) 300 |
Balance Syn. Air* |
Gas Nitrous oxide |
Formula N2O |
δ15N (‰ atm N2) -0.3 ± 0.5 |
δ15N (alpha) (‰ atm N2) - 0.4 ± 0.5 |
δ15N (beta) (‰ atm N2) -0.2 ± 0.5 |
δ18O (‰ VSMOW) 41.9 ± 1 |
Conc. (ppb) 1500 |
Balance Syn. Air* |
| Category | Gas | Formula | Conc. (ppm) | δ13C (‰ VPDB) |
Gas | Formula | Conc.(ppm) | δ13C (‰ VPDB) |
Balance |
|---|---|---|---|---|---|---|---|---|---|
Category Low |
Gas Carbon dioxide |
Formula CO2 |
Conc. (ppm) 250 |
δ13C (‰ VPDB) - 5 ± 0.3 |
Gas Methane |
Formula CH4 |
Conc.(ppm) 1 |
δ13C ( ‰ VPDB)- 25 ± 0.5 |
Balance Syn. Air* |
Category Medium |
Gas Carbon dioxide |
Formula CO2 |
Conc. (ppm) 350 |
δ13C (‰ VPDB) - 10 ± 0.3 |
Gas Methane |
Formula CH4 |
Conc.(ppm) 2 |
δ13C ( ‰ VPDB)- 45 ± 0.5 |
Balance Syn. Air* |
Category Natural |
Gas Carbon dioxide |
Formula CO2 |
Conc. (ppm) 400 |
δ13C (‰ VPDB) - 8.6 ± 0.3 |
Gas Methane |
Formula CH4 |
Conc.(ppm) 1,8 |
δ13C ( ‰ VPDB)- 47 ± 0.5 |
Balance Syn Air* |
Category High |
Gas Carbon dioxide |
Formula CO2 |
Conc. (ppm) 1000 |
δ13C (‰ VPDB) - 20 ± 0.3 |
Gas Methane |
Formula CH4 |
Conc.(ppm) 10 |
δ13C ( ‰ VPDB)- 69 ± 0.5 |
Balance Syn. Air* |
Category High-High |
Gas Carbon dioxide |
Formula CO2 |
Conc. (ppm) 1000 |
δ13C (‰ VPDB) - 30 ± 0.3 |
Gas Methane |
Formula CH4 |
Conc.(ppm) 1000 |
δ13C ( ‰ VPDB)- 25 ± 0.5 |
Balance Syn. Air* |
Category Depleted |
Gas Carbon dioxide |
Formula CO2 |
Conc. (ppm) 2500 |
δ13C (‰ VPDB) - 50 ± 0.3 |
Gas Methane |
Formula CH4 |
Conc.(ppm) 100 |
δ13C ( ‰ VPDB)- 55 ± 0.5 |
Balance Syn. Air* |
* Syn. Air: 20.9% O2 / Balance N2
Other ALPHAGAZ Isotope Mixtures are available upon request.
Packaged
SCOTTY 34
- Gas Volume: 34 L (1.2 CF)
- Water Volume: 1.0 L
- Pressure: 500 psig (34 bar)
- Outlet Fitting: C-10 5/8" – 18 UNF
- standard Material of Construction: Aluminium
- Weight: 0.8 lbs. (0.4 kg)
- Dimensions: 2-7/8" x 11-1/2" (73 mm x 292.1 mm)
- DOT Specs: 39 NRC
Other packaging is available upon request
Single-stage, nickel-plated brass, piston-type non-corrosive service
- Inlet: C-10 5/8" – 18 UNF standard
- Inlet Pressure max.: 1000 psig (69 bar)
- Outlet Connection: 3/16“ hose barb
- Material of Construction:
- Piston: Brass, Seat: PTFE, Seal: Viton,
- Bonnet: Nickel-plated brass
- Weight: 1 lbs. (0.5 kg)
Regulator Model 27B
Regulator Model 206BB
Single-stage, high-purity, low internal volume
- Inlet: C-10 5/8" – 18 UNF standard
- Inlet Pressure max.: 3000 psig (207 bar)
- Outlet Connection: 1/4“ Swagelok connector
- Material of Construction:
- Diaphragm: 316
- Stainless Steel, Seat: PCTFE, Seal: PTFE,
- Body: Brass
- Weight: 1.3 lbs. (0.6 kg)