PurityPlus® Grade 6.0 Gases by Spec Air Specialty Gases: Greater Production, Lower Costs

Critical gas users must have high-quality Carrier Gases for chromatography and all analytical applications. Offering these gases had better be second-nature to any specialty gas vendor. In the last forty years, give or take, both the detection limitations of typical technology and ever better analytical methods have justifiably put greater demand on these gases. The gas specifications that were acceptable in the 1970s may not be in the 2010s. Meeting or surpassing upgraded specs requires a continual investment by the gas supplier – in instrumentation and purification equipment, in training to realize optimal performance from these vehicles, and in continuous review, testing, and auditing of manufacturing and quality methodologies. So that we can stay a step ahead of your needs, we’re increasing our ability to create and certify the gases you depend on in the 21st century.

What, then, are you buying? What are you measuring? And what advantages do you gain by buying the highest-purity gas your finances allow? Let’s review the PurityPlus Specifications.

PurityPlus Helium,         UHP, 5.0                        Ultra Carrier, 5.5                       Chromatographic, 6.0

Minimum Purity            99.999%                        99.9995%                                  99.9999%

Oxygen                        < 2 ppm                       < 1 ppm                                   < 0.5 ppm

Moisture                       < 2 ppm                       < 1 ppm                                   < 1 ppm

Hydrocarbons              <0.5 ppm                     < 0.5 ppm                                < 0.2 ppm

Nitrogen                                                          < 4 ppm                                   < 1 ppm

Carbon Monoxide                                                                                           < 0.1 ppm

Carbon Dioxide                                                                                               <0.1 ppm

What’s it all mean? If you’re process measuring with components in percentage ranges, 5.0 gases are generally acceptable. If you’re measuring impurities in the 10–1,000 ppm range, you’ll get a flatter baseline and more exacting measurements using 5.5 gases. And if you’re performing contaminant detection and quantification below 10 ppm, you probably should be using 6.0. That said, it isn’t just about adhering to standards. It’s also about our process. Are your cylinders pre-treated to prevent eventual contamination from sidewall corrosion and degassing? Ours are. Are the instruments used to confirm these specifications continually calibrated using traceable standards? Ours are. And can this calibration be documented? Ours can.
If you’re a Auburn user of high-purity gases, PurityPlus® by Spec Air Specialty Gases should be your Number One choice. We’ve put our money in tools and people. We actively join in an extensive round-robin program to test our capabilities. We continually audit ourselves by benchmarking against other producers and engaging a third-party auditing group to review us. And, unlike a lot of our competitors, we can fulfill your gas requirements locally – doing everything from responding to your queries, to producing and delivering your gases and equipment, to solving any misunderstanding or error however unlikely. Take the time to compare. Then call Spec Air Specialty Gases today at or contact us online. We can serve all of your specialty gas needs from right here in Auburn!