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Biochemistry The fastest growing journal in the field . . . annually offers over 5400 pages of original research in all areas of fundamental biology. Concentrating on manuscripts that generate new concepts and experimental approaches, Biochemistry is not merely a depository of scientific data. It is a highly readable anrl informative publica tion of the American Chemical Society w i t h an exceptionally clear and well designed format. Color stereophotography is used for illustrative clarity. Some reflect the chemistry, biological
30 to 40 papers, biweekly, strong relationship between biochemistry and the other sciences.
Subject matter includes enzymes— proteins—carbohydrates—lipids—nucleic acids and their metabolism—genetics—protein biosynthesis—and other rapidly expanding fields. You'll find Biochemistry keeps vou current on the most recent research findings. To order your personal sub scription, just complete and return the form below.
American Chemical Society 1155 Sixteenth Street, N.W. Washington. D.C. 20036 Please enter my subscription to Biochem istry at the rates checked below. ACS Members: • LI S S20 Ο Canada. PUAS $23 Π Other Nations $23.50 Nonmerrtbers: Π U S. $40 Π Canada. PUAS $43 • Other Nations $43.50 π B.!l rro Π Bill employer Π Payment enclosed (Payable to American Chemical Society) Nan Ρ Title Employer Adciresr; Cl !7
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Lab Computer Handbook. A 300-page handbook describe,-; h a r d w a r e and soft ware features and uses of PDP-12 lab computer systems. Digital E q u i p m e n t Cor])., 14(3 M a i n St., M a y n a r d , Mass. 017.54. 617-S97-5111
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Photon Counting Catalog. F o u r pages, picture, describe, and price the com pany's digital synchronous c o m p u t e r ; amplifier discriminator; d a t a converter console: power supply console; and ΡΛΙ tube housings. SS1Î I n s t r u m e n t s Co. 213-451-8701 601 Rl Monitor. T o u r pages detail a differential refractive index monitor designed for use in liquid chromatography for elution profiles, control process streams, and density gradient composition in labs and industry. Pharmacia Fine Chemicals, Inc. 201409-1222 602
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Selection Electrodes. Bull. 7145-A, 10 liages, describes 17 selective ion electrodes for use with expanded-seale lab p l l meters. Clinical and research models tire covered and typical applications and performance information are given. Beckman I n s t r u m e n t s , I n c . 714-S71-4S4S 603 Biochemical Research Catalog. Some 1000 products for research, including the life sciences, are listed in a firstedition catalog. E m p h a s i s is on biochemicals such ;ts peptide substrate, chemicals for radioimmunoassay, derival ization reagents for gc analysis of steroids, and other products. liesoarch Plus Laboratories, Inc. 2O1-027-SSO0 604 Colorimeters for Pollution Testing. A 0-page folder gives information on the company'.- direct-reading engineer's lab for field testing of water and t h e Dli colorimeter lest center which performs f>2 different water and wastewater tests, lfaeh Chemical Co. 515232-253:1 605
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Laboratory Catalog. A 1170-page catalog contains more than 20,000 items of scientific instruments, a p p a r a t u s , and lab furniture. It is alphabetically arranged, profusely illustrated, and has both alphabetical and numerical indexes. Curtin Scientific Co. 713-9231001 606 Sputter Ion Gun and Control Unit. F o u r pages picture, give design features, and specifications for Models 04-131 s p u t t e r ion gun and Model 20-005 control unit . Phvsical Electronics I n d u s tries, I n c . 012-941-5540 607
NO DEWARS, NO TRANSFER LINES, NO LIQUID CRYOGENS, NO GAS CYLINDERS. CTi Cryocoolers are ideal for laser raman, IR, resonance spectroscopy (or any application where you want cooling, but don't want complications.) • • • • • •
Plug-in installation Single-button control Below 20° Κ cooling in minutes Controlled temperatures to 300° Κ Run unattended for weeks High-speed sample interchange From the Company that makes cool as simple as heat. Write or call for details on CTi Cryocoolers.
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A N A L Y T I C A L CHEMISTRY, VOL.
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