Shimadzu data-processor equipped Densitometers for new dimensions in quantitative TLG. • CS-920 High-Speed T L C Scanner T h e first instrument to make direct quantitation of T L C spots available, Shimadzu's CS-920 High-Speed T L C Scanner has a built-in integrator, printer and other technical refinements to ensure e x c e l lent quantitative analysis. Many valuable features: • The automatic lane ^^^^^^ changing mechanism permits rapid analysis of a large number of samples. Up to seven samples a minute can be scanned.
• The built-in microprocessor provides automatic detection of chromatogram spots. Fused spots are separated and determined automatically. • Unique high-speed zigzag scanning, working curve linearization, background correction, and reflection absorption ensure concentrationlinear output. Thus excellent quantitatlveness is provided. • Quantitative calculation with either the external or internal standard method. • Direct printout of concentration values. CIRCLE 190 ON READER SERVICE CARD
A CS-930 Dual-Wavelength T L C Scanner The Shimadzu CS-930 Dual-Wavelength T L C Scanner is a refined m i c r o computerized version of the Shimadzu CS-910 Dual-Wavelength Scanner—a w i n n e r of the 1977 l-R C o m p e t i t i o n . T h e CS-930 with parallel line printer is a low cost complete microprocessor c o n t r o l l e d system for quantitative, highly sensitive, high-speed densitometry. T h e features are outstanding: • Dual-wavelength method eliminates baseline drifts caused by local irregularities of layer thickness.
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Zigzag scanning method with a very small light beam eliminates errors caused by irregular shape of developed spots. • Working curve linearization a c c o r d ing to the Kubelka-Munk's equations. Built-in microprocessor provides: • Signal averaging-smoothing permits the quantitation of n a n o g r a m q u a n tity level.
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Automatic lane changing up to 30 lanes of c h r o m a t o g r a m spots. • Automatic detection of chromatogram spots. • Quantitative calculation w i t h the external or internal standard method. The concentration values are directly printed out. • Storage of operational parameters. CIRCLE 191 ON READER SERVICE CARD
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SHIMADZU SCIENTIFIC INSTRUMENTS, INC.
SHIMADZU SCIENTIFIC INSTRUMENTS. INC. 9147 Red Branch Road.Columbia.Md 21045.U.S A Phone:(301)997-1227 Fax:(301)730-1290 SHIMADZU (EUROPA) GMBH Acker Strasse 111. 4000 Dusseldorf. FR. Germany Phone: (0211)666371 Telex: 08586839 SHIMADZU CORPORATION INTERNATIONAL MARKETING DIV. Shinjuku-Mitsui Building. 1-1. Nishishinjuku 2-chome, Shinjuku-ku, Tokyo 160. Japan Phone: Tokyo 03-346-5641 Telex 0232-3291 SHMDT J
