ways PICKER NUCLEAR osea, help you

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ways PICKER NUCLEAR can help you... to separate steroids and similar organic complexes use this

radiiκ·h roinnlo^ram scanning system

Picker N u c l e a r can help you d o m o r e accurate radio-paper c h r o m a t o g r a p h y t o yield quantitative data on the a m o u n t of several organic complexes present in a mixture, o r for testing the purity of a given material. T w o systems are available ( 1 ) a continuous scanning arrangement that yields a strip chart recording of radio activity that you can lay alongside the c h r o m a t o g r a m and (2) a stepwise scanning arrangement that gives you a printed record of count and time information corresponding t o the radiation m e a s u r e m e n t of succes­ sive areas, each equal to the slit opening. Both systems can or thick (Whatman offer a choice of slit or thin window flow detectors.

handle \W wide thin (Whatman # 1 ) # 3 ) paper in any length. Both systems width and may be used with windowless counters, Geiger tubes, or scintillation

the original chromatogram

the resultant scanogram ,

This Chromatogram Scanning System is one of the comprehensive Picker line of nuclear instrumentation and supplies: all marketed and serviced through a national network of company offices staffed by trained Picker people. (Picker alone in the nuclear field offers this caliber of local service). For details call your district office ( see 'phone book) or write Picker X-Ray Corporation, 25 South Broadway, White Plains, New York.

The Picker Automatic Strip Scanner (center) scans the strip chromatogram: feeds into the Picker Laboratory Ratemeter (right) whose dual output is re­ corded as both linear and log counts by the Dual Recorder (left).

Picker nuclear Circle No. 144 on Readers' Service Card

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