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Gases, Liquids, and Liquefied Mixtures

We supply certified reference gases, light liquid hydrocarbons, and liquid reference materials in various cylinder sizes and types.

Certified Reference Materials

CAC Gas offers a wide range of certified reference materials, including specialty gas mixtures, liquids, and liquefied gas standards. Curated from several industry-leading manufacturers, only mixtures that meet CAC’s high standard for quality are supplied to meet the needs of an ever-evolving landscape of analytical applications. CAC Gas’s range of gases and liquids are available in a wide array of cylinders, bottles and ampoules. All certified reference materials supplied by CAC Gas are manufactured using traceable weights and measures before being analysed or tested by specific, documented methods, and come with a certificate stating the method(s) used. These methods aim to promote consistent product quality and properties across a single product type from various manufacturers, or to ensure a minimum level of product quality. Methods may be nationally or internationally recognised, such as those from ASTM, ISO, or US EPA. 

Traceability is demonstrated by an unbroken chain of measurements or calibrations all the way to the accepted international primary reference materials. This means that the calibration of the instrumentation used throughout the manufacturing process (scales/balances, mass flow controllers, pressure gauges, etc.) must be ISO 17025 certified. Calibration certificates for relative instruments are kept on file and referenced on the mixture certificate as needed. To meet the most stringent customer requirements, some mixtures will have been produced or calibrated within the scope of an ISO 17034 or ISO 17025 accredited organisation whose accreditation is recognised under the ILAC MRA**, so they are accepted globally*. *These mixtures meet the requirements of: ISO/IEC17025:2017; ISO Guide 30:2015 (Clause 2.1.1 or 2.1.2); and AS2290:2018

Accreditation proves the producer’s technical capability in measurement and stated traceability to SI units, having been thoroughly assessed by the relevant national testing authority.

For more information, read our blog on understanding units of measurement for specialty gas mixtures or determining the accuracy of a calibration gas mixture.
Click here for more information on ILAC MRA

Group shot of NRCs

Calibration Gas

CAC GAS provides calibration and bump test solutions to help ensure safety of workers through the accuracy of your personal, hand-held, vehicle mounted, or fixed gas detection instruments. Whether you require a single, disposable cylinder or a complete gas distribution system connecting multiple gas mixtures to hundreds of docking stations, CAC GAS has the solution.

As a speciality gas manufacturer, we supply calibration gas, regulators, and accessories for every gas detection instrument whether they are portable or fixed. Gas mixtures are available in a variety of sizes from 34 litres to more than 7500 litres gas volume, with gas delivery equipment, to meet your requirements.

Gas mixing and dilution systems are available that can be used for multi-point or ‘span’ calibrations for all types of instruments, even where ISO17025 or ‘NATA’ calibrations are required.

Our products can be used in every application where calibration gas mixtures are required.

  • Multi-gas mixtures (4 and 5gas) including H2S/CO/CO2/CH4/O2
  • Single gas binary mixtures CO, CL2, H2S, HCL, HCN, NH3, NO, NO2, SO2
  • ppm to % volume concentrations
  • Refrigerant calibration gas
  • Specialty mixtures for PID calibration – Isobutylene, benzene
  • Specialty mixtures for marine applications- butane/isobutane
  • Gas Mixtures in cylinders from 34 litre to 7500 litre in size
  • Large volume/high-pressure cylinders for calibration/bump testing
  • Gas Distribution Systems for connection to Docking Stations
  • Specialty carrying cases/systems for technicians calibrating fixed systems
  • Experience in all sensor types for specialized calibrations.

Light Liquid Hydrocarbons & Liquid Reference Materials

Light Liquid Hydrocarbons / Liquefied Mixtures
Light liquid hydrocarbons, sometimes referred to as liquified gas mixtures, are mostly known to fit between what can easily be distinguished as crude oil products or natural gas streams. Light liquids fit a broad spectrum of process conditions spanning from NGLs, LPGs, condensates, petrochemical and refinery gases.
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Liquid Reference Materials
CAC Gas provides a wide variety of liquid reference materials/calibration standards. These standards are gravimetrically prepared and N.I.S.T. Traceable by weight, with the gravimetric values verified by one or more analytical methods.
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Cylinder Sizes & Specialty Cylinders

We produce simple binary mixtures through to complex multi-component gas mixtures in a range of cylinder sizes.  CAC Gas offers non-refillable (low-volume) cylinders, high-pressure (large-volume) cylinders, and low-pressure cylinders.
 
All valve types are available, including AS, BS, CGA and DIN as required. Gases are supplied with a certificate of composition. Cylinders are labelled with the gas volume, pressure, our reference, date of manufacture and shelf life.
Group shot of NRCs

Non-Refillable Cylinders

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high pressure gas cylinders

High-Pressure Cylinders

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low pressure gas cylinders

Low-Pressure Cylinders

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Specialty Cylinders

TO Standards for Volatile Organic Compounds Monitoring

TO 14, 15, 17 standards for VOC monitoring and soil sampling are available in all configurations 39, 41, 62 or subset component mixtures.  Gas mixtures for all VOC’s including BTEX mixtures, Isobutylene and other organic vapours are available.

View our TO Standards webpage for more information.

Mini Cal Cylinder & Regulator

Miniature Calibration Standards are great for on-the-spotMini Cal Cylinder for calibration calibration. Each standard is blended and trans filled into a low pressure, steel, one-liter cylinder. These cylinders are best suited for natural gas, and refinery gases.

  • One-liter low-pressure cylinder with a brass CGA 170 valve.
  • Mini Regulator is recommended for this cylinder.

The Brass Mini-Regulators are crafted with safety in mind for leak proof gas applications. The low pressure regulators utilize a CGA 170 fitting. These brass regulators offers “push-lock” precision control over gas pressure and features a non-relieving diaphragm to protect your lab environment. It accepts a 1-15 psi outlet and a 0-300 psi inlet.

3L High Pressure Cylinder & ISO 17025 Marine Emissions Test Kit

The ISO 17025 Marine Emissions test kit provides SO2/CO2 calibration gases for marine stack gas analysis.   The kit provides the equipment necessary to calibrate and test CEMS (Continuous Emissions Monitoring Systems) to meet airborne pollution levels in the MARPOL Annex VI.

The kit comes with the mobile carrying case; two 3L (600 litres of gas @ 200bar) high pressure cylinders of chosen gas; a compact, single-stage cylinder pressure regulator and tubing.

The case is made of highly impact-resistant plastic. It’s temperature resistance is between -40 ° C and +80 ° C. The all-round impact protection features make it shock and impact absorbing. This case is lockable with an ergonomic, telescopic handle and wheels for a secure and convenient solution.  

Lecture Bottle Cylinders

Lecture bottles are a traditional cylinder type used for scientific research applications where lower volumes are required in a variety of gases and purity grades. Lecture bottles are available for many gases from ammonia to xenon. 

For a complete list of gases click here.

Lecture bottles have a 0.4 litres water capacity, measure 310 mm long by 50 mm diameter and come with a CGA 180 valve.   Lecture bottle stands are also available.

ISO 17025 Mixture in Non-Refillable Cylinders

In addition to all our ISO 17025 mixtures being available in high pressure cylinders, certain ISO 17025 mixtures are available in non-refillable cylinders.

View our ISO17025 in NRCs webpage for more information and a list of our capabilities.

Constant Pressure Cylinders
CP constant pressure cylinder

Designed with an internal piston and seals, the CP2 cylinder is pressured with an inert gas supply, and then turned around and filled slowly from the opposite end. By letting the gas push against the piston, slowly venting the pre-charge gas, the sample is taken at full line pressure from start to finish. While the cylinder is being emptied, full pressure is being maintained and the gas composition is not being altered as a result of pressure reduction. The cylinder is equipped with valves, safety reliefs, and gauges on both ends and thus the pressure can be controlled and monitored at all times on both ends.

View our Constant Pressure Cylinder webpage for more information.

Sample Cylinders

The Single Cavity Sample Cylinder and the Absorbent Tube Cylinder are available for gas or liquid sampling in a variety of applications. 

View our Sampling Cylinders webpage for more information.

Bottles & Ampoules

bottles for liquid standards certified reference materialsCAC Gas provides a wide variety of liquid reference materials/calibration standards. These standards are gravimetrically prepared and N.I.S.T. Traceable by weight, with the gravimetric values verified by one or more analytical methods.  

ASTM compliant and ISO17034 Liquid Standards in bottles and ampoules. 

  • Heavy Hydrocarbon Liquids
  • Crude Oil
  • Liquid Phase Natural Gas Liquids (NGL)

Available in 1 mL, 2 mL, 5 mL, 10 mL, 20 mL, 50 mL, 100 mL, 200 mL, 500 mL ,and 1 liter sizes.ampoules

Unique Gas Applications for Nitrogen Dioxide (NO2)

Calibration gases play a pivotal role in the smooth and efficient operation of analytical instruments across a wide array of industries. Among these, methane, propane, and pentane stand out due to their specific properties and diverse applications. Understanding where and how these gases are utilized not only underscores their importance but also highlights the technological precision necessary in today’s industrial and environmental landscapes.

Read More »

The Versatile Role of Methane, Propane, and Pentane as Calibration Gases

Calibration gases play a pivotal role in the smooth and efficient operation of analytical instruments across a wide array of industries. Among these, methane, propane, and pentane stand out due to their specific properties and diverse applications. Understanding where and how these gases are utilized not only underscores their importance but also highlights the technological precision necessary in today’s industrial and environmental landscapes.

Read More »

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    • cac@cacgas.com.au
    • 1300 CACGAS (222 427)