Trace Analytics, LLC provides analyses for pure gases used in a variety of industries. Testing can include gas purity by difference e.g. the pure gas concentration is determined to ± 0.3% absolute, then all other determined gases are subtracted from 100.00% to arrive at the reported value.
Impurities such as oxygen, nitrogen, carbon monoxide, carbon dioxide, total volatile hydrocarbons, halogenated hydrocarbons, and water can be determined for the above pure gases. We can also provide analyses of particles, water, and oil for pure gas systems.
The following are gas specifications commonly used. We can also provide a custom specification based on your requirements.
Pure Gases - Selected Air Quality Specifications |
| Air Quality Specification |
THC |
CO |
CH4 |
CO2 |
H2O |
DP, °F |
O2 |
N2 |
OIL |
ODOR |
Other |
| CGA G-4.3-2007 Type I Grade D Oxygen |
40 |
N/A |
N/A |
N/A |
50 |
-54.5 |
99.5 |
N/A |
0 |
None |
N/A |
| CGA G-10.1-2008 Type I Grade B Nitrogen |
N/A |
10 |
N/A |
N/A |
N/A |
N/A |
0.1 |
99.0(N) |
N/A |
N/A |
N/A |
| Commercial Item Description, CID A-A-59503C, Nitrogen, Type I, Grade B |
50 |
N/A |
N/A |
N/A |
26 |
-64 |
0.5 |
99.5(N) |
N/A |
No Odor |
Particulate Matter Maximum Dimension, µm (M) |
| 50 |
| IEST-STD-CC1246D-2002 Levels 100 and A/100(I) |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |
100 (M1) |
N/A |
No. Particles 5 µm Dia. and Larger |
No. Particles 15 µm Dia. and Larger |
Additional Particle Size Ranges Below |
| 1780 |
264 |
N/A |
| MIL-PRF-27401F-2008 Nitrogen Grade A Type I (N1) |
58.3 |
N/A |
N/A |
N/A |
26.3 |
-63.5 |
0.5 |
≥99.5 |
N/A |
N/A |
Impurities, ppmv (M3) |
| ≤5,000 |
| Navy A-A-59155-2008 Grade B Nitrogen |
50 |
N/A |
N/A |
N/A |
25 |
-64 |
0.5 |
99.5(N) |
N/A |
None |
Moisture Content, mg/L |
Particle Content, >50 µm |
Other |
| 0.02 |
None |
N/A |
| USP Nitrogen 99 Percent-2007 |
N/A |
10 |
N/A |
N/A |
N/A |
N/A |
≤1.0 |
≥99 |
N/A |
None Discernable |
N/A |
| USP Oxygen 93 Percent-2011 |
N/A |
10 |
N/A |
300 |
N/A |
N/A |
90.0-96.0 |
N/A |
N/A |
N/A |
N/A |
| USP Oxygen 99 Percent-2004 |
N/A |
10 |
N/A |
300 |
N/A |
N/A |
99.0-100.0 |
N/A |
N/A |
N/A |
N/A |
| THC = Total Gaseous Hydrocarbons, ppmv |
CO2 = Carbon Dioxide, ppmv |
O2 = Oxygen, volume % |
N2O = Nitrous Oxide, volume % |
| CO = Carbon Monoxide, ppmv |
H2O = Water, ppmv |
N2 = Nitrogen, volume % |
Odor = Odor as supplied by customer |
| CH4 = Methane, ppmv |
DP = Dew Point, °F at 0 psig |
Oil = Oil Mist & Particulate, mg/m3 |
HS = Halogenated Solvents, ppmv |
|
| (I) |
Particulate cleanliness level 100 from Table 1; NVR cleanliness level A/100 from Table 3, IEST-STD-CC1-1246D, Product Cleanliness Levels and Contamination Control Program,Copyright 2002 by IEST. |
| (M) |
A-A-59503C, 3.3: "The material shall contain no solid particles whose maximum dimension is greater than 50 micrometers (µm) for type I nitrogen." |
| (M1) |
100 mg/m3 is numerically equivalent to the Table 3 A / 100 level of 10 µg / 0.1 L. |
| (M2) |
This specification for oxygen is taken from Military Specification MIL-PRF-27210H, 10/1/20099, and modified by Boeing Commercial Airplane Group due to method limitations as follows: there are no limits for acetylene, ethylene, nitrous oxide, halogenated compounds, nor other compounds. Compliance with MIL-PRF-27210H for those compounds is not determined. TVHC (excluding methane) is based on methane equivalents rather than ethane equivalents. Oxygen is determined to ± 0.5% absolute by comparison to calibration standards, then all determined non-Oxygen gases and vapors are subtracted from 100.00 % to arrive at the calculated value. Subtracted gases which are below the detection limit are subtracted as 0.00%. Gases which are not determined (including Helium and Hydrogen) will, if present, represent an error in the calculated value of Oxygen. |
| (M3) |
Sum, in ppmv, of water, hdrocarbons, oxygen, argon, carbon monoxide, and carbon dioxide. NOTE: Hydrogen ins not determined and not included in impurities. |
| (N) |
The pure gas concentration is determined to ± 0.3% absolute, then all other determined gases are subtracted from 100.00 % to arrive at the reported value. Gases present but not determined may cause an error in the reported value of the pure gas. |
| (N1) |
The pure gas concentration is determined to ± 0.3% absolute, then all other determined gases are subtracted from 100.00 % to arrive at the reported value. Gases present but not determined may cause an error in the reported value of the pure gas. Type I refers to gaseous nitrogen. |
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