First We Test Every Capillary Column We Make
Next We Deliver Your T h e n We Back E a c h Column O r d e r Within Column With Expert 24 H o u r s Technical Service
When you buy one of our capillary columns, you get more than just a column. You get a column that has been thoroughly tested by our Quality Assurance Department for coating efficiency and inertness. In most cases, coating efficiency is guaranteed to be at least 75%.
Then we ship your column about as fast as a column can be shipped — more than 90% of our stock capillary columns go out less than 24 hours after we receive the order. But it doesn't end there.
Every Supelco customer receives the benefit of our Technical Service Department. This busy group of experts has solved hundreds of difficult problems for capillary chromatographers all over the world. It's reassuring to know you have your own personal consultant only a phone call away. And now you can have our new Capillary Chromatography Supplies Catalog. To receive your FREE COPY — or to get the answer to a question about chroma tography — simply call our Technical Service Department (814359-3441) and mention this ad. It wouldn't hurt to call right now — while supplies last.
We measure tubing ID to ensure that it falls within certain limits, so you can be sure film thickness is what you expect. Static coating techniques are used for a uniform phase film. And of course we monitor every column's polarity using appropriate test mixes. You can be assured of consistent retention times and elution order — column after column.
SUPELCO A ROHM AND HAAS COMPANY Supelco Park · Bellefonte, ΡΛ 16Θ23-004Ε CIRCLE 154 ON READER SERVICE CARD
1338 A · ANALYTICAL CHEMISTRY, VOL. 60, NO. 23, DECEMBER 1, 1988
