Only
with Fisher/Victoreen GC Systems
The most repeatable pyrograms These superimposed pyrograms depict the highest repeatability ever possible in pyrolysis. There are no visible differences in the number of peaks, their retention time, or relative shape. Only the Fisher/ Victoreen Pyrolyzer delivers this superb repeatability. Hence, non-volatile compounds can now be analyzed and fingerprinted with all the high sensitivity, simplicity and speed of GC. You no longer need worry that the same compound will produce different fingerprint patterns. The Fisher/Victoreen Pyrolyzer is exceptionally easy to use, too. There's no sample preparation — just place a small fragment in the sample boat.
The Fisher/Victoreen Pyrolyzer
The Fisher/Victoreen Series 4400 is an unsurpassed research-grade gas chromatograph system. It's especially noted for its extra large oven controlled from —160°C to +400°C by a recycling programmer and its 4-column capacity allowing permanent connection of detectors and inlet accessories.
All peaks on scale without attenuation The unique capability of the Digital Log Electrometer (used with the flame ionization detector) is shown by the black curve above. It was made without attenuation, yet no information is lost. Its highest peaks are on scale; its smallest shoulders are distinctly resolved. Compare it with the gray curve — an unattenuated linear display — where the larger peaks are off scale. A big time saver, the Log Electrometer eliminates preliminary scans (vital when samples are limited). It's also ideal for the wide range of peaks in pyrolysis. To automatically integrate the peaks — saving you yet more time — there's a Digital Log Integrator. For product and applications bulletins write Fisher Scientific, 711 Forbes Ave., Pittsburgh, Pa. 15219.
F Fisher Scientific Co.
CIRCLE 4 9 O N READER SERVICE CARD
ANALYTICAL CHEMISTRY, VOL. 43, NO. 14, DECEMBER 1971
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