Medical Air
Medical Air is an important gas mixture used widely in all critical care areas to reduce human respiratory issues (pulmonary nebulization) or to treat hypoxia during mechanical ventilation or surgical procedures.
Dry grade is used to drive surgical air tools. It is also used to replace contaminated atmospheric air and as a carrier gas for volatile anesthetic agents. .
Medical air is supplied in the following specification under the Eur. Phar:-
Medical Air | ||
---|---|---|
Monograph | Ph Eur | |
Name | Medical Air | |
Reference | 1238 | |
Chemical Formula | N/A | |
Definition | Compressed ambient air containing not less than 20.4 %V/V and not more than 21.4 % V/V of O2. | |
Identification | Complies with the Assay or Glowing wood splinter not extinguished or Oxygen content tested by passing sample through potassium hydroxide/sodium dithionite solution. | |
Production:- | ||
Assay | ||
Assay | 20.4%V/V < O2 < 21.4 % V/V | |
Analytical Method | Paramagnetic Analyser | |
Impurities:- | ||
CO | ||
Limit | < 5 ppm V/V | |
Analytical Method | Infrared Analyser | |
CO2 | ||
Limit | < 5 ppm V/V | |
Analytical Method | Infrared Analyser | |
SO2 | ||
Limit | < 1 ppm V/V | |
Analytical Method | UV Fluorescence Analyser | |
NO/NO2 | ||
Limit | < 2 ppm V/V in total | |
Analytical Method | Chemiluminescence Analyser | |
Oil | ||
Limit | < 0.1 mg/m3 | |
Analytical Method | Detector tube when an oil lubricated compressor is used for production | |
H2O | ||
Limit | < 67 ppm V/V3 | |
Analytical Method | Electrolytic hygrometer | |
Tests:- | ||
CO | ||
Limit | < 5 ppm V/V | |
Analytical Method | Detector Tube | |
CO2 | ||
Limit | < 500 ppm V/V | |
Analytical Method | Detector Tube | |
SO2 | ||
Limit | < 1 ppm V/V | |
Analytical Method | Detector Tube | |
NO/NO2 | ||
Limit | < 2 ppm V/V | |
Analytical Method | Detector Tube | |
Oil | ||
Limit | < 0.1 mg/m3 | |
Analytical Method | Detector Tube | |
H2O | ||
Limit | < 67 ppm V/V3 | |
Analytical Method | Detector Tube |