Column Chromatography Iti T h r e e Easy Lessons
MANUFACTURERS' LITERATURE PolyPac R e a g e n t s . Some 91 r e a d y to-use solutions, r e a g e n t - g r a d e chemi cals, a n d clinical specialities a r e listed in a n 8-pagc catalog. T h e s e materials come in P o l y P a c (store-and-dispense p o l y e t h y l e n e cubes) in 21/2 and 5 gal exclusively. F i s h e r Scientific Co., 312 F i s h e r Bldg., P i t t s b u r g h , P a . 6 0 1
Analog-to-Digital Converters. A n 8p a g e applications m a n u a l gives basic t h e o r y , circuits, definition of k e y p a r a m e t e r s of analog-to-digital con v e r t e r s in general, plus extensive user information on t h e c o m p a n y ' s Model ADC-TJ. Analog Devices, I n c . , P a s toriza D i v . , 221 F i f t h St., C a m b r i d g e , M a s s . 02142. 602
F"*
* Three Easy Prices Too.' For Complete Information Send For Brochure CC31
Lesson No.1 Monitor the effluent with an ISCO quantitative ultra violet analyzer. Linear absorbance recording and single or dual-beam operation at 254 and 280 νημ are only a few of ISCO's exclusive features.
Lesson No.2 •.i-cSMii,'
.&• * * * * * f» .Γ Μ . s *. ',
