V O L U M E 2 1, N O . 4, A P R I L 1 9 4 9 45 A

A Penny An Impression . . . That's just about what it costs to run a one-inch advertisement every month for a year in the Laboratory Supply Center of Analytical Chemistry.

For the price of a government penny post­card (before you print any message on it), you can attain :

Readership by over 29,000 techni­cal men involved in analysis and control work in both plant and laboratory.

Attention from readers who study every ad in the Laboratory Supply Center because they are in a buy­ing frame of mind.

Listing of your name in the Adver­tisers' Index along with all other advertisers.

If you'd like to try a less frequent cam­paign, we're at your service. One one-inch insertion is yours at the very low cost of $10.00. Analytical Chemistry and the other American Chemical Society publica­tions can help you do some testing or small-scale advertising at remarkably low rates. Why not call a Reinhold repre­sentative today to work with you on how to best make sales through this economical medium?

* * * * Want more basic facts on the Process Industries and the magazines which serve the field most effectively? Send for our Data Sheet file. It will give you all pertinent data on markets, circulation, rates, readership, etc. Write to: Promotion Department, Reinhold Publishing Corporation, 330 West 42nd Street, New York 18, Ν. Υ.

INDEX TO ADVERTISERS Allied Chemical & Dye Corp 13 A Aloe Co., A. S 24 A American Optical Co 8 A Amersil Co., Inc 40 A Angel Co., Inc., H. Reeve 35 A Autoclave Engineers Inc 43 A Baird Associates, Inc 15 A Baker & Adamson Products 13 A Baker Chemical Co., J. Τ 4 A Bausch and Lomb Optical Co O.B.C. Boekel & Co., Inc., Wm.. . . -. 32 A Braun Corp 39 A Buffalo Apparatus Corp 46 A Central Scientific Co 22 A Chemical Rubber Co 43 A Clay-Adams Co., Inc 34 A Coleman Instruments, Inc 26 A Coors Porcelain Co 35 A Eastman Kodak Co 23 A Eberbach & Son Co 39 A Eimer & Amend I.F.C. Eppley Laboratory, Inc 35 A Farrand Optical Co., Inc 42 A Fenwal, Inc 40 A Fisher Scientific Co I.F.C. Fish-Schurman Corp 32 A:40 A General Chemical Div 13 A General Laboratory Supply Co 34 A Glycerine Producers' Assoc 29 A Greiner Co., Emil 12 A Hamilton Mfg. Co 37 A Harshaw Chemical Co 18 A Hellige, Inc 34 A Hoskins Mfg. Co 17 A International Equipment Co 9 A Kimble Glass I.B.C. Klett Mfg. Co 28 A : 3 6 A : 4 2 A Laboratory Construction Co 33 A Leeds & Northrup Co H A Lindberg Engineering Co 19 A Machlett & Son, Ε 33 A Mallinckrodt Chemical Works 10 A Martin & Co., H. S 6 A National Carbon Co., Inc 16 A Owens-Illinois Glass Co I.B.C-Palo-Myers, Inc 36 A Parr Instrument Co 37 A Photovolt Corp 41 A Precision Scientific Co 7A:30 A:43 A Radio Corp. of America 25 A Sargent & Co., Ε. Η 21 A Schaar & Co 14 A Schleicher & Schuell Co., Carl 41 A Scientific Glass Apparatus Co., Inc 31 A Southern Scientific Co., Inc 46 A Spencer Lens Co 8 A Standard Scientific Supply Corp 38 A Taylor & Co., W. A 32 A Thermal Syndicate, Ltd 36 A Thomas Co., Arthur H 20 A Todd Scientific Co 5 A Union Carbide & Carbon Corp 16 A Will Corp 46 A

DIRECTORY

Laboratory Supply Center 44 A Balsbaugh, J. C. Burrell Technical Supply Co. Crystal Research Laboratories, Inc. Greiner Glassblowing Laboratory LaMotte Chemical Products Co. Sorvall, Inc., Ivan Stark Sales Co. Wisconsin Alumni Research Foundation