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the JJIiJJJl: mTfimn Actually, it's not that simple. Purity isn't measured strictly in numbers. It's measured by knowing what contaminants exist and at what levels. From trace all the way to full percentages. The fact is, even the most sensitive, highly automated analytical instrument can only be as good as the gases you use to calibrate and operate it. Which in many cases, simply aren't good enough. That's why Air Products doesn't
just go by the numbers. We go by the facts. But we don't stop there. We guarantee our impurity specifications. Not just on a typical analysis basis—but at a guaranteed level for each critical contaminant. It's a confidence level you can depend on time after time. What that means to you is reduced downtime. Increased revenue. Extended equipment life. And the optimal analytical results you need. Consistently. Reliably. CIRCLE 36 ON READER SERVICE CARD
Call Air Products today, because 99.9999% isn't always enough. Air Products and Chemicals, Inc., Specialty Gas Department, 7201 Hamilton Blvd., Allentown, PA 18195. 1-800-752-1597. FAX 1-215-481-5036. ©Air Products and Chemicals, Inc., 1990
Optimal results, time after time.
AIR PRODUCTS
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