SGE supplies certified and primary gas mixtures from two to thirty or more components.  Custom mixtures are evaluated for  reactivity, stability, material compatibility, and potential safety hazards.

Blend stability can be affected by cylinder surface materials, raw material impurities,  and chemical reactions between the components themselves.  Requested  components are reviewed for reactivity and appropriate materials and procedures  selected to ensure stability throughout the certification period of the product.

Components with low vapor pressures may affect the final blend pressure. All fuel-oxidizer blend are evaluated for safe manufacture.

Primary Standard

• Primary Standard is the highest resolution blend made by weight.
• The primary mixture is certified to + 1% of each minor component when concentration is above 10 ppm
• Mixture of concentrations between 1 ppm to 9.9 ppm it is certified to + 2% of each minor component
• Mixtures of concentrations below 1 ppm it is certified to + 20% of each minor component
• Each cylinder has a certificate of analysis complete with certified concentrations

Certified Standard

• Certified standard is certified to + 2% of each minor component for concentrations above 10 ppm and + 5% of each minor component for concentrations below 10 ppm
• The blend tolerance for a minor component maybe doubled that of a primary standard
• Each cylinder has a certificate of analysis complete with certified concentrations

SGE supplies so many different gaseous products for various special applications.  We have helped many diverse industries successfully meet and exceed unique requirements and regulations.

See below our extensive offering of gaseous products for the following special applications.  If by chance you don't see what you need, we'll create a custom gas product to meet your needs.  Please contact us for more information.

• Continuous Emission Monitoring Gas Mixtures
• Environmental Compliance Gas Mixtures
• Engine Emissions Testing Gas Mixtures
• Flame Ionization Fuel Gas Mixtures
• Flame Resistance of Cloth Test Mixtures
• Food and Beverage Gases
• Hydrocarbon Blends
• Insulated Glass Gas Mixtures
• Laser Gas Mixtures
• Laboratory Mixtures
• Leak Detection Mixtures
• Lighting Gases
• Medical Gas Mixtures
• Semiconductor Gases
• Steel and Heat Treatment Gases
• Supercritical Fluids for SFC and SFE
• Welding and Laser Cutting Gases

The manufacturers of our EPA protocol gases are registered participants of EPA’s Protocol Gas Verification Program (EPA PGVP vendor).

EPA Protocol Gases are prepared and analyzed in strict accordance with the most current guideline entitled “EPA Traceability Protocol Assay andCertification of Gaseous Calibration Standards”.  The guideline specifies methods for traceability to National Institute of Standards and Technology (NIST) StandardReference Materials (SRMs) or other NIST-approved reference materials, which includes NIST Traceable Reference Materials (NTRMs).  The majority of EPA Protocol mixtures are certified to +/-1% overall uncertainty guarantee, except limited by the higher uncertainty of the NIST SRMs or NTRMs.

All analytical certifications are performed under completely interference-free conditions.  Maximum allowable shelf life is guaranteed.  Documentation is fully conformed to the requirements of the EPA Protocol program and in compliance with the Clean Air Act.

EPA Protocol Standards are available for below typical blends:

Two components:

CO/Air, CO/N2, CO2/Air, CO2/N2, O2/N2, C3H8/Air, C3H8/N2, CH4/Air, CH4/Air, H2S/N2, NO/N2, NO2/Air, SO2/Air, SO2/N2

Three components:

NO+SO2/N2, C3H8+O2/N2, CO2+O2/N2

Four components:

CO+NO+SO2/N2, SO2+NO+CO2/N2

Five components:

C3H8+CO+NO+SO2/N2

SGE offers a full line of convenient, portable and disposable calibration gas cylinders for low calibration gas volume applications. Typical applications includes:

• Health & Safety Monitoring for Gas Detection
• Function Testing of Gas Equipment and Monitors
• Automotive Exhaust Emission Standards
• Ambient Air Monitoring Standards
• Low Level NO & NO2 Mixtures

They are available in a wide variety of cylinder sizes with different capacities.  We supplies non-reactive gas mixtures in gas volume of 17L, 34L & 103L steel cylinders and reactive gas mixtures in 34L, 58L & 76L aluminum cylinders.
 

List of some available products:

Zero Grade and Pure Grade Gases                 Oxygen (100 ppm - 21%)
Ammonia (10-50 PPM)                                   Sulfur Dioxide (5 -50 PPM)

Carbon Dioxide (100 PPM - 15%)                   H2S/LEL/CO/O2 in N2

Carbon Monoxide (10 PPM - 7%)                   LEL/O2 in N2

Hydrogen (20 PPM - 2%)                                Ethylene Oxide

Hydrogen Cyanide (5ppm-10ppm)                BTU and RGA Mixes

Hydrogen Sulfide (5-100 PPM)                       BTXE mixtures

Isobutylene (10-100 PPM)                              Bump Gas (H2S/CO/CH4/O2)

Nitric Oxide (5-800 PPM)                               CFC'S/HCFC'S/HFC'S mixtures

Nitrogen Dioxide (5-800 PPM)                       Phosphine in N2

Nitrous Oxide (10-500 PPM)                           Toluene in N2