PurityPlus® Grade 6.0 Gases by Greco Gas: Greater Production, Increased Cost Savings

Critical gas users are adamant about having high-quality Carrier Gases for chromatography and every analytical application. Producing these gases had better be foremost among the skill sets of any specialty gas vendor. In the last forty years, give or take, the narrow detection capabilities of common technology in addition to ever-evolving analytical methods have justifiably put more demand on these gases. The gas specifications that seemed reasonable enough in the 1970s may not be in the 2010s. Meeting and exceeding upgraded specs requires a progressive investment by the gas supplier – in instrumentation and purification equipment, in education to realize maximum performance from these methods, and in continuous review, testing, and auditing of manufacturing and quality procedures. So that we can continue anticipating your needs, we are expanding our ability to create and certify the gases you require now and are likely to require in the months and years ahead.

What, then, are you buying? What are you measuring? And what benefits can you accrue seeking out the highest-purity gas your finances allow? Let’s do a quick study of 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 do these specs reveal? If you’re process measuring with components in percentage ranges, 5.0 gases are probably sufficient. If you’re measuring impurities in the 10–1,000 ppm range, you’ll produce a flatter baseline and more accurate measurements using 5.5 gases. And if you’re performing contaminant detection and quantification below 10 ppm, you’ll get better results using 6.0. Nevertheless, it isn’t simply a matter of standards. It’s about our process too. Are your cylinders pre-treated to preclude eventual contamination from sidewall corrosion and degassing? Ours are. Are the instruments used to verify these specifications cyclically calibrated using traceable standards? Ours are. And can this calibration be documented? Ours can.
If you’re a Pittsburgh user of high-purity gases, PurityPlus® by Greco Gas should be your Number One choice. We’ve committed a considerable amount of our financial resources to developing both tools and people. We actively join in an all-inclusive round-robin program to check out our capabilities. We constantly audit ourselves by benchmarking against other producers and engaging a third-party auditing group to analyze us. And, unlike many of our competitors, we can handle your gas requirements locally – doing everything from answering your questions, to producing and delivering your gases and equipment, to resolving any misunderstanding or error that may crop up, however unexpectedly. Carefully compare your options. Then get hold of Greco Gas today at (724) 226-3800 or contact us online. We can serve every one of of your specialty gas needs from right here in Pittsburgh!