Chromatogram Analysis? Consider this. Consider the Schoeffel SO 3000. Why? Fair question. Answers: It's a Multi-Media System: You can quantitate TLC plates, disc and fiat gels, columns, agars, films, acrYlamides, paper strips. Among others. More Versatile: Transmission (spectral absorption! or reflection (flu orescence, fluorescence quenching) modes. High intensity source, transmission and emission analyzing monochromators permit spectrophotometry detection, spectrofluorometry, emission anal ysis, etc., etc. It's More Accurate, More Sensitive: The SO 3000 will detect and quan titate sub-nanogram amounts; linear function ranges foi quanti tation 0 3 ng upward. It is a double- (or single-) beam backgrounddiscriminating System; inhomogenieties, anomalies are ratioed out. Superior resolution: it will resolve substance zones of great complexity, e.g., in mixtures with superimposed absorbances and fluorescences or quench and fluorescence inter-mixtures. Usable, High Confidence Readouts: Selection of Linear (0 to 100% ΤI or Log (0 to 3 O.D.) output modes. Linearity, log mode, rnO.5%; lin mode, ±1.0%. Matched, fully controllable photomultiplier detection. Zero offset ±150%. Reversible output polarity, onscaie instantaneous recording of absorption and fluorescence. Electrical and meter readout. Self-checking ratio. Better Economics: Modular—You need buy only what you need, add later. Initial cost compares very favorably with competilive sys tems. Refiability: outstanding. Value to you of higher accuracy, greater sensitivity, versatility ? More of your colleagues have selected the SO 3000 than any other even remotely comparable system After due consideration. The Schoeffel SD 3000. It does more, better. If you would like complete technical literature, a prompt and con vincing demonstration or both please write or 'phone. SCHOEFFEL IN STRUMENT CORP. * 24 Booker Street, Westwood, New Jersey (201 ) - 604-7263. In Europe: Schoeffel Instrument GMBH, 2351 Trappenkamp, t Strasse 2, West Germany (04323) 564.
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