Hey! W h a t s the matter w i t h these fractions?
Nothing -
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ISCO's automatic actuator has just isolated a l l U V absorbing peaks i n separate tubes· That's a l l · υ z
< TIME 1 TUBE No.
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While tube 3 was filling, a UV absorbing peak was detected by the automatic actuator which immediately moved tube 4 into position to isolate the peak. The instant the peak had finished eiuting, the automatic actuator moved tube 5 into position to resume normal collection. And did you know: 1. That ISCO UV analyzers are the only low-cost flow stream analyzers that monitor true linear absorbance? All comparable instruments record percent transmittance: some have "percent absorption" or exponential absorbance calibrations. 2. That the monochromatic light system of ISCO UV analyzers produces the narrowest bandwidth (0.6 mp) of any UV analyzer on the market and there fore, ISCO UV analyzers are uniquely suited for quantitative work? 3. That ISCO monitors are available in single beam 254 mp and dual beam 254 mu and 280 mp versions? There's a 410-700 mp version too. 4. That ISCO monitors cost about the same as wide bandwidth, percent transmittance monitors without the automatic fraction collector actuator? Don't you think you should investigate them before you buy a flow monitor? Write for brochure UA11B for complete details.
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Dual Beam UV Optical Unit
ISCO I N S T R U M E N T A T I O N 5624 SEWARD AVE.
Model UA-2 Ultraviolet Analyzer
S P E C I A L T I E S COMPANY, INC.
LINCOLN, NEBRASKA 68507, U.S.A.
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PHONE (402) 434-8265
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CABLE ADDRESS: ISCOLAB LINCOLN
Circle No. 35 on Readers' Service Card
146 A
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ANALYTICAL CHEMISTRY
Circle No. 28 on Readers' Service Card
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