WHICH SIM RECORD WOULD YOU BELIEVE? The task
Identify and quantify—unambiguously—a vasodilator in plasma extract using SIM GC/MS. Concentration: 1 ppm The problem.... Interfering compounds at the same nominal mass The solution . . . . Increased Mass Spectrometer Resolution, with the KRATOS MS25S
Note the tremendous improvement in spec ificity for the drug measurement by in creasing resolution from 1200 * (on the left) to 10,000* (on the right). The signal is to tally resolved from background, giving credibility to the identification and quanti fication of the compound.
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Tired of fighting your q u a d r u p o l e for answers that are just out of reach? The KRATOS MS25S routinely delivers supe rior performance at a price you can afford. Let us show you how it can give you all the data you need. 'Half-height definition
KRATOS, LTD. Barton Dock Road, Urmston Manchester, England M31 2LD Telephone 061-865-4466
Background—ι
Drug (M/e 264)
MM
For literature. Circle #1 1 6. For salesman t o call, Circle #1 1 7. ANALYTICAL CHEMISTRY, VOL. 50, NO. 13, NOVEMBER 1978 · 1273 A
