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acre. 16 pp., 6 x 9.........postpaid, $0.50. Northwest Drug & Chemical Products Co. 3106 SE. 50th Ave., Portland 6, Oregon. Keep Key Samples. For Read...
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ANALYTICAL

36A

CHEMISTRY

LABORATORY SUPPLY CENTER

THE

The results to be gained from advertising in Analytical Chemistry may be estimated if we study a few of the statistics obtained from the famous Hancock Report which last year revealed some amazing figures concerning

FLASH-O-LENS

the American Chemical Society publications.

SPOTLIGHTS as it MAGNIFIES!

stance, when respondents were asked what single phase

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E. W. PIKE & CO.

LABORATORY SERVICES Vitamin Assays Mineral Determinations Food Bacteriology Insecticide Testing

For in-

of the Society's activities had done them the most good, 8 1 % answered "Publications."

And when they were

asked which publications are referred to regularly, 67% of the chemists named "Analytical Chemistry." We think the above figures, based on a completely authentic survey conducted by an independent research organization, are worthy of every advertiser's consideration. To our way of thinking, high editorial readership

WISCONSIN ALUMNI RESEARCH FOUNDATION

means high advertising readership — readership that

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counts in the magazine that counts. Why not investi-

SOIL ANALYSIS —Determination of—

gate the advertising rates for THE LABORATORY SUPPLY CENTER now?

Available Plant Nutrients in Soil Extracts. By C. R. Johnson, Ph.D., Chief Chemist, Pittsburgh Testing Laboratory, Portland, Oregon. Single-sample factor-volume method a d a p t e d to modern photoelectric colorim­ eters, giving soluble Ν , Κ, Ρ, C a , M g , S, and Fe directly in pounds per 6-inch acre. 16 pp., 6 χ 9

postpaid, $ 0 . 5 0

DIRECTORY ADVERTISING RATES

I n f o r m a t i o n please ! Our readers —• your customers -— would like to know more about your firm, your products, your activities. Tell them all they wish t o know. Tell them NOW. Tell them in the LABORATORY SUPPLY CENTER

Northwest Drug & Chemical Products Co. 3106 SE 50th Ave., Portland 6, Oregon

Keep Key Samples For R e a d y R e f e r e n c e Samples ofMaterials You Study, Make, Buy or Sell RPC SAMPLE STORAGE SET, M O D E L A , KEEPS 100 SAMPLES S3.Î5

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R. P . Cargille

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