ALPHAGAZ™ Specifications
ALPHAGAZ™ range of Pure Gases for Analysis: two purity levels tailored to cover all your analytical needs.
Because each analytical application is sensitive to critical impurities that can affect your results, tests in our research center and analyzer manufacturers' studies confirm that the main impurities are moisture, oxygen and hydrocarbons.
Based on these critical impurities, Air Liquide has developed ALPHAGAZ™ brand with a Maximum Impurity Level (H2O, O2, CnHm).
- The Maximum Impurity Level is the same across the whole product range. This constitutes a guarantee of quality with regard to major critical impurities and contamination tracers. ALPHAGAZ™ 2 offers an even greater guarantee in terms of purity (CO, CO2, H2).
- The Minimum Total Purity is a prerequisite for product quality, but we do not stop there: Air Liquide selects and controls its gas sources by defining specifications regarding impurities that are critical for your analysis or application.
| ALPHAGAZ™ 1 | ALPHAGAZ™ 1 | ALPHAGAZ™ 2 | ALPHAGAZ™ 2 | ALPHAGAZ™ AUTO IV | ALPHAGAZ™ CO2 SFC |
| He, N2, H2, Ar, O2 |
Air | He, N2, H2, Ar, O2 |
Air | Air*, N2, O2 | CO2 |
| Specifications (ppm vol): | |||||
| H2O < 3 ppm O2 < 2 ppm CnHm < 0.5 ppm |
H2O< 3 ppm CnHm< 0.1 ppm CO2 < 1 ppm CO < 1 ppm |
H2O < 0.5 ppm O2 < 0.1 ppm CO2 < 0.1 ppm CO < 0.1 ppm CnHm < 0.1 ppm H2 < 0.1 ppm |
H2O < 0,5 ppm CnHm < 50 ppb CO2 < 0,1 ppm CO < 0,1 ppm NOx < 10 ppb * SO2 < 10 ppb* |
CnHm < 0.2 ppm CO2 < 0.5 ppm CO < 0.5 ppm NO/NOx < 0.1 ppm |
H2O < 5 ppm O2 < 2 ppm CnHm < 2 ppm NVOC* < 2 ppm CO < 5 ppm NO + NO2 < 2 ppm S Total < 1 ppm H2 < 0.5 ppm |
| 20 ± 1 % O2 (Europe) 21 ± 1% O2 (North America) |
20,9 ± 1 % O2 *: Detection limit |
*20 ± 1 % O2 | *NVOC: Non Volatil Organic Compounds | ||
| Minimum Total Purity | |||||
| 5.0 or N50 or 99.999 % 4.5 or N45 or 99.995 % for O2 |
5.0 or N50 or 99.999% | 6.0 or N60 or 99.9999 % 5.5 or N55 or 99.9995 % for O2 |
6.0 or N60 or 99.9999% | 5.2 or N52 or 99.9992% | 4.8 or N48 or 99.998% |
To help you during your choice of gas and equipment, we suggest to you to use our on line Selector. This selection guide enables you to send a request for a quotation.
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