Specialty & High Purity Gases


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Our Quality Guarantee

CAC GAS supplies precision gravimetric calibration gases and high purity specialty gas mixtures for all industrial, mining and laboratory applications where precision and accuracy is required. When you select CAC GAS for your specialty gases and equipment you will receive gases that offer the highest level of purity, consistency, compliance and accreditation.


With over 75 years of experience in calibration gases, gas detection and gas analysers, CAC GAS brings practical knowledge and skills in understanding customer’s requirements and providing a total customer solution. CAC GAS provides specialty calibration gas mixtures for every industrial and mining application.

Specialty Gas Mixtures

Gases are available in binary and multi-blend mixtures for calibration applications including process gas analysis, environmental measurement and analytical laboratory measurement.  

ISO 17025 Mixtures

Multiple hydrocarbon mixtures for natural gas & LNG applications, refinery gases and sulphur mixtures for the oil/gas industry are available with ISO 17025 accreditation. 

Coal Mining calibration gas for NATA 6 monthly calibrations. 

CEM(Continuous Emission Monitoring) ISO 17025 Gases: Binary emission gas mixtures and multi-gas mixtures (CO, CO2, O2, NO, NO2, SO2) used for regulatory EPA applications are available.

TO14/TO15 EPA Protocol Gas Mixtures for environmental applications.

Pure Gases

Analytical grade

Our gas mixtures will meet your specifications for purity, accuracy and stability. Carrier gases for mixtures are 99.999% pure or higher where appropriate.

High purity

High purity gases-from Acetylene to Xenon, CAC GAS offers a range of high purity gases up to 99.999% (grade 5) in high pressure cylinders along with the correct gas control equipment to ensure that the purity you require is maintained accurately through to your point of use. See High Pressure Regulators.


Gas mixtures are available in ten different cylinder sizes and capabilities.High pressure cylinders are available in 5L, 10L, 20L and 50L water capacity. See High Pressure Cylinders.

Smaller disposable cylinders are available for many gas mixtures, when a smaller volume of gas is required. Whether it is a single gas or a complex blend, specialty mixtures can be produced in a range of sizes from 34 litres to 112 litres. See Non-Refillable Cylinders.

We produce gas mixtures for special applications where only one cylinder may be required.

CAC GAS does not charge monthly rental fee for high pressure cylinders. This eliminates the administrative burden of managing cylinder quantity, location and reduces cost.

Regulators and Gas Control Systems

It is important to transfer your gas from the cylinder to the point of application with no degradation to the purity or impact on the accuracy of your application results. CAC GAS will help you select the appropriate gas control equipment for the job so that you can deliver your gas at:

  • the highest quality and accuracy
  • the correct pressure or flow


CAC GAS supplies a range valve outlets and connector to meet your needs including AU (Australia), BS (UK), DIN (Germany) and CGA (USA). 

Technical Support

We offer guidance in the selection of gas mixtures and associated equipment you need for your application. Our aim is to provide specialty gas mixtures and equipment to you, where you need it, when you need it. CAC GAS offers consultative service where we work with you in partnership and determine the total volume of gas that will be consumed and recommend the most appropriate and cost effective strategies.