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    Material Selection for Gases in Non-Refillable Cylinders

    Alex Singer

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    Topics: Gas & Cylinder Selection, Gas Control & Regulator Selection

    Ozone for Water Treatment

    Greg Shires

    Ozone can be used for the treatment of water in multiple industries including municipal water treatment; wastewater; bottled water, wineries and breweries; aquaculture; drinking water for livestock; hydroponics; water treatment in cooling towers and air washers; public swimming pools; aquariums and zoos; commercial laundry facilities; soil/groundwater remediation and more.

    Ozone is typically generated using the electrical discharge method where oxygen is exposed to high voltage resulting in oxygen molecules colliding with O2 to create the unstable O3 molecules. 

    Ozone is 13 times more soluble than oxygen. This solubility makes ozone very useful in many water treatment applications. Ozone can be dissolved in water much easier than oxygen although it does still require mechanical mixing.

    Ozone is one of the most effective oxidants on earth, making it better than most chemical alternatives at breaking down contaminates and killing bacteria.

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    Topics: Gas & Cylinder Selection, Gas Detection, Water & Wastewater Treatment

    Calibration Gas Solutions for Measuring Nitrogen Dioxide (NO2)

    Greg Shires

    Nitrogen dioxide (NO2) is one of a group of highly reactive gases known as oxides of nitrogen or nitrogen oxides (NOx). Other nitrogen oxides include nitrous acid and nitric acid. NO2 is used as the indicator for the larger group of nitrogen oxides.

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    Topics: Gas & Cylinder Selection, Gas Hazards & Dangerous Goods, Gas Detection

    What makes a good calibration gas?

    Alex Singer

    There are two types of measurements made when preparing gas mixtures. The first is measuring what goes into the cylinder (volumetric or gravimetric measurement), and the second is measuring what comes out of the cylinder (measurement based on analysis). The first is relatively simple, as you need to only have:

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    Topics: Gas & Cylinder Selection, Specialty Gas Applications, Scientific & Laboratory

    Disposal and Recycling of Gas Cylinders

    Paul Fry

    Recycling gas cylinderOnce you’re done with your calibration gas cylinder it’s important to safely dispose of it. All CAC GAS cylinders can be returned to us for proper disposal. Some can be reused, others cannot. No cylinders should be put into general waste and it can be difficult to find a recycler who will accept cylinders.

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    Topics: Gas & Cylinder Selection, Gas Hazards & Dangerous Goods

    The 552L High Pressure Cylinder

    Paul Fry

    552 Cylinder-971370-edited-390906-edited-1The 552DS cylinder is designed to take advantage of the convenience and portability of the 103DS disposable steel cylinder as well as the high capacity of a typical larger, high-pressure cylinder.

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    Topics: Gas & Cylinder Selection

    Prevent Contamination Of Your Gas Mixtures

    Greg Shires

    CAC-Cylinder-Family-172694-editedMany instrumentation manufacturers are producing gas detection monitors with multiple sensor capability of 4, 5, 6 or more sensors in one instrument. Many of those instruments are measuring toxic gases such as ammonia, chlorine, hydrogen cyanide, nitrogen dioxide and other gases.   

    Calibration and bump testing will be a requirement for all these sensors but unlike a standard 4 gas mixture of H2S/CO/CH4/O2 each gas must be separate and cannot generally be mixed with other gases. There are potential issues which can arise if correct procedures for handling these gases is not used.

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    Topics: Gas Theory & Applications, Gas & Cylinder Selection, Gas Detection

    Calibration Gas Cylinder: Recycling & Refilling Solution.

    Greg Shires

    Calibration & specialty gas mixtures are stored in two main cylinder types.  

    • Low pressure cylinders known as disposable or non-refillable cylinders (NRC)
    • High pressure / large volume refillable cylinders.
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    Topics: Gas & Cylinder Selection