46 A
ANALYTICAL
CHEMISTRY
FOR ROUTINE HIGH-CE An ultracentrifuge to concentrate, purify, and classify macromolecules and colloidal materials — p r o t e i n s , viruses, enzymes, chemical precipitates, etc. Interchangeable angle-type rotors run in vacuum chamber equipped with refrigera tion for controlled rotor temperatures. Automatic electronic controls govern the entire fast cycle of operation, monitor the self-balancing quiet 40,000-rpm electric drive. Double armor-steel guard and inter locks combine safety with dependability. Sendfor complete information on Model L Preparative Ultracentrifuge
SPECIALIZED INSTRUMENTS CORPORATION 607 O'NEILL AVE., BELMONT, CALIF.
RE Ρ KIN Τ S of these symposia and feature articles from ACS journals may be ob tained promptly. AU are timely — each contains up-to-date information covering an important field of chemistry or chemical engineering:
Νame
Reprinted from
"Fluorine Chemistry"
l&EC, March '47 and Analytical Ed., March '47 JACS, November '46 JACS, November '47 Analytical Ed., O c t '47 I&EC, April '47 l&EC, September '48 l&EC, September '49 l&EC, October '48 l&EC, October '49 l&EC, January '48 l&EC, January "49 Analytical Chemistry, Jan. & Feb. '49 Analytical Chemistry, July '49 Analytical Chemistry, Aug. '47 & July '49 l&EC, November '49 l&EC, March, April & May '49 l&EC, February '50 l&EC, June '50 l&EC, June '50 l&EC, July '50
"Nuclei Formed in Fission" (page size 7V£* χ 10") "Ion-Exchange Resins" "Raman Spectra" "Vapor Pressure" "Unit Processes 1st Annual Review" "Unit Processes 2nd Annual Review" "Materials of Construction 2nd Annual Review" "Materials of Construction 3rd Annual Review" "Unit Operation 3rd Annual Review" "Unit Operations 4th Annual Review" "Analytical Chemistry 1st Annual Review" "Aieotropic Data" Part II "Azeotropic Data" Parts I & I I , Combination only "Atmospheric Contamination & Purification" "Corrosion Testing in Pilot Plants" "Titanium Symposium" "Chemical Facts & Figures—1950" "Absorption & Extraction" "Adsorption Symposium"
Pages
Price
214 32 114 70 32 144 114 164 64 56 56 283 42 144 109 56 71 232 80
S p e c i a l P u b l i c a t i o n s D e p a r t m e n t , A M E R I C A N CHEMICAL· SOCIETY 1155 Sixteenth St., N . W . Washington β, D. C.
.75 .35 .35 .35 .35 .50 .50 .75 .50 .50 .50 1.50 .35 .85 .75 .25 .50 .75 .75 .50
