PurityPlus® Grade 6.0 Gases by Weldstar: Larger Production, Lower Costs Critical gas customers are adamant about having high-quality Carrier Gases for chromatography and any job requiring the application of analytics. Supplying these gases should be a core competency of any specialty gas supplier. Over the past forty years, the limited detection abilities of common technology coupled with constantly advancing analytical processes have naturally made these gases more popular than ever. The gas specifications that seemed reasonable enough in the 1970s may not be in the 2010s. Meeting or surpassing ever new specs makes necessary a steady investment by the gas supplier – in instrumentation and purification equipment, in tutelage to obtain top performance from these tools, and in frequent review, testing, and verification of manufacturing and quality programs. To keep in front of your needs, we are expanding our ability to manufacture and certify the gases essential to your ever expanding applications. So what are you buying? And what are you measuring? And what’s the advantage of seeking out the highest-purity gas your budget allows? Let’s look closely at 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 ppmWhat do these specs reveal? If you’re process measuring with components in percentage ranges, 5.0 gases are usually okay. 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 engaged in contaminant detection and quantification below 10 ppm, you’ll get better results using 6.0. Nevertheless, it isn’t merely a consideration of standards. It’s about our process too. Are your cylinders pre-treated to preclude subsequent contamination from sidewall corrosion and degassing? Ours are. Are the instruments used to affirm these specifications regularly calibrated using traceable standards? Ours are. And can this calibration be documented? Ours can. If you’re a Northern Illinois user of high-purity gases, PurityPlus® by Weldstar should be your Number One choice. We’ve put our money in tools and people. We actively participate in an all-inclusive round-robin program to verify our capabilities. We repeatedly 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 fulfill your gas requirements locally – doing everything from fielding whatever questions you have, to creating and delivering your gases and equipment, to clearing up any misunderstanding or error that may crop up, however unexpectedly. Compare what’s available. Then call Weldstar today at 855-998-4875 or contact us online. We can handle each of your specialty gas needs from right here in Northern Illinois!