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      Traceability & Certification: What's the difference?

      Paul Fry

      In the world of measurement and calibration, the most reliable way to determine a product’s quality is the evidence provided to support the claims about a product’s attributes: Traceability and Certification.

      A detailed outline of these attributes can be found in our Introduction to Calibration Gases article.

      CAC Gas has three classifications of gas and liquid mixtures in high pressure cylinders.

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      How to Ensure Breathalyser Accuracy.

      Maria Pamboris

      Alcohol impaired drivers risk not only their own lives but the lives of others. They can face large fines, loss of license and even imprisonment. By removing these drivers, we reduce the potential for serious injury or fatal collisions on our roads.

      But how do we do that?

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

      SilcoNert® - Better performance, better results.

      Matt Shaw

      What is it?

      SilcoNert® is a non-reactive silicon coating process that makes flow paths inert for better process control, consistent sampling, and analytical results. The patented chemical vapor deposition process bonds the coating to stainless steel; alloy; ceramic; and glass, making a high-tolerance, durable coating even under extreme temperatures and pressures.

      SilcoNert® is made by SilcoTek Coatings, "the world's leading provider of high performance inert coatings applied by chemical vapor deposition (CVD)." 

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

      Material Selection for Gases in Non-Refillable Cylinders

      Alex Singer

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

      NRC Regulators...more options and uses than you may think.

      Greg Shires

      The typical application for bump testing or calibrating your instrument using an NRC regulator requires a fixed flow 0.5 litre/min regulator, a bit of tubing; a calibration cup; your gas mixture; and you are good to go.

      There is nothing wrong with that, provided you are using the correct flow rate, regulator material and tubing. If your instrument has an internal pump, then you should be using the On-Demand Flow Regulator

      There are several regulators which can be used with NRC gas mixtures. Here are a few ideas for making your bump test or calibration system more efficient and functional.

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      Topics: Gas Detection, Gas Control & Regulator Selection

      High Accuracy Calibration with the MICRO300 Precision Regulator

      Paul Fry

      When producing a specialty gas mixture, most of the time taken to manufacture it goes into cylinder preparation to ensure that the mixture is stable. This is the single most important aspect in a quality gas mixture. If what comes out of the cylinder is not what is described on the label it will result in a poor calibration. Much time, testing, and research is invested in the development of techniques related to the interaction with cylinders and valves, solely to ensure the stability of mixtures. In general, it includes:

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      Topics: Specialty Gas Applications, Gas Control & Regulator Selection

      Calibrating HCN Instruments at Low Concentrations

      Greg Shires

      Gold mines worldwide use cyanide to extract gold from ore.  As environmental standards have increased in most mining areas around the world, cyanidation plant tailings must be treated to remove the cyanide and various cyanide compounds, including hydrogen cyanide (HCN), before they are discharged into a tailing storage facility.  Methods to remove the cyanide and destroy it have increased in cost to the point where processes to recover the cyanide for reuse have become more cost effective than purchasing new cyanide.  

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      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