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Scott Specialty Gases produces a comprehensive selection of natural gas Btu calibration gas standards and NGL calibration standards. We use only high-purity, well-characterized raw materials, and document all components through careful laboratory analysis and precise cross-contamination calculation. All calibration gas standards are traceable to reference standards that include NMi Primary Reference Materials. Scott Btu standards are the only calibration gas standards that provide guaranteed ±1% (1 Btu) accuracy for trouble-free, peak performance of today’s generation of analyzers providing ±0.25% and ±0.5% repeatability. Consistency and quality of Scott gas mixtures set the standard in calibration accuracy for all natural gas and hydrocarbon applications.
Scott products and services for natural gas applications include:
Trust Scott's specialty gas products for all of these applications:
- Pipeline: Online analyzers, lab analyzers and propane/air injection systems.
- Reduction of Unaccounted for Gas: Using ±1% accurate calibration gas and liquid mixtures.
- Petrochemical: Raw material analysis for quality assurance.
- Processing Plant: Process control, acid gas treating/sulfur recovery, dehydrator emissions monitoring, environmental compliance, health and safety, and quality assurance.
- Wellhead and Logging: Quality assurance, environmental compliance, sample cylinder/sample line cleaning, and health and safety.
- Utility and Power Plant: Online/lab analyzers for Btu verification.
Order Online
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Btu 1298
0.5% Helium, 5% Nitrogen, 1% Carbon Dioxide, 9% Ethane, 6% Propane, 3% Iso-Butane, 3% n-Butane, 1% Iso-Pentane, 1% n-Pentane in Methane |
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GPA Natural Gas Reference Standard
The Gas Processors Association's "GPA Standard of Analysis for Natural Gas and Similar Gaseous Mixtures by Gas Chromatography" (GPA Publication 2261-72) and ASTM's. Method D-1945-62T recommend this specialty gas mixture for calibration and analysis.
Available in:
- XL
(30 cu. ft.) Returnable Cylinder
- SCOTTY
14 (14 liter) Transportable Cylinder |
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Btu 1028
2.5% Nitrogen, 3% Carbon Dioxide, 3.5% Ethane, 1% Propane, 0.4% Iso-Butane, 0.4% n-Butane, 0.15% Iso-Pentane, 0.15% n-Pentane, 0.1% Neopentane, 0.05% n-Hexane, 0.02% n-Heptane in Methane |
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Calorimetric Natural Gas Reference Standard
This standard reflects the composition of many
natural gas pipelines.
Available in:
- XL
(30 cu. ft.) Returnable Cylinder
- SCOTTY
14 (14 liter) Transportable Cylinder |
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Btu 1500
9% Nitrogen, 0.5% Carbon Dioxide, 12.5% Ethane, 7% Propane, 3% Iso-Butane, 3% n-Butane, 0.5% Iso-Pentane, 0.5% n-Pentane in Methane |
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High Ethane Natural Gas Standard
Scott recommends this specialty gas mixture for applications where heavier hydrocarbon
values are not significant.
Available in:
- XL
(30 cu. ft.) Returnable Cylinder
- SCOTTY
14 (14 liter) Transportable Cylinder |
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Btu 1083
2% Helium, 1.6% Nitrogen, 0.2% Carbon Dioxide, 3% Ethane, 1.7% Propane, 1% Iso-Butane, 1% n-Butane, 0.3% Iso-Pentane, 0.3% n-Pentane in Methane |
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Helium Enriched Natural
Gas Reference Standard
Natural gas containing a high level of helium requires a specialty gas mixture
with an appreciable increase in helium concentration.
Available in:
- XL
(30 cu. ft.) Returnable Cylinder |
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Btu 1010
Methane 99.99% |
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Specific Btu Methane Standard
Specific Btu methane is provided in high-pressure gas cylinders at 2000 psig (138 bar).
Available in:
- XL
(30 cu. ft.) Returnable Cylinder |
| For additional information about Scott's Btu gas mixtures for natural gas applications,
take a look at Scott's latest technical
bulletins and brochures - available in PDF file format. To order online, select the appropriate product and cylinder size. |
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