ADVERTISERS' PRODUCT GUIDE
152.
156. HALOGEN RATUS
Aloe Scientific Division of A. S. Aloe Co. C. A. Brinkmann & Co.* Burrell Corp. Chemical Rubber Co.* Erb & Gray Scientific, Inc. F & M Scientific Glassware Co.* Fisher Scientific Co. Emil Griener Co. Harshaw Scientific Division of Harshaw Chemical Co. Kern Laboratory Supply Co. Arthur S. LaPine & Co. New York Laboratory Supply Co. Palo Laboratory Supplies. Inc. Precision Scientific Co.* E. H. Sargent & Co. Schaar & Co. Scientific Glass Apparatus Co. Tenso-Lab, Inc. Arthur H. Thomas Co. Wilkens-Anderson Co. Will Corp. 157.
FLASH POINT TESTER
»
TESTING
Aloe Scientific Division of A. S. Aloe Co. C. W. Brabender Instrument, Inc.* Burrell Corp. Chemical Rubber Co.* Chicago Apparatus Co. Electric Hotpack Co.* Erb & Gray Scientific, Inc. Fisher Scientific Co.* Emil Greiner Co. Harshaw Scientific Division of Harshaw Chemical Co. Kern Laboratory Supply Co. Labline, Inc.* Arthur S. LaPine & Co. New York Laboratory Supply Co. Palo Laboratory Supplies, Inc. Precision Scientific Co.* E. H. Sargent & Co. Schaar & Co. Scientific Glass Apparatus Co. Tenso-Lab, Inc. Arthur H. Thomas Co. Wilkens-Anderson Co. Will Corp. 155.
GUM CONTENT APPARATUS
Aloe Scientific Division of A. S. Aloe Co. American Instrument Co.* Burrell Corp. Chemical Rubber Co.* Chicago Apparatus Co. Erb & Gray Scientific, Inc. Fisher Scientific Co. :Emil Greiner Co.
MELTING POINT APPARATUS
Ace Glass, Inc.* Aloe Scientific Division of A. S. Aloe Co. American Hospital Supply Corp. American Instrument Co.* Burrell Corp. Chemical Rubber Co.* Engelhard Industries* Erb & Gray Scientific, Inc. Fisher Scientific Co.* Emil Greiner Co. Harshaw Scientific Division of Harshaw Chemical Co. Kern Laboratory Supply Co. Kontes Glass Co.* Arthur S. LaPine & Co. Microchemical Specialties* Nalge Co.* New York Laboratory Supply Co. Palo Laboratory Supplies, Inc. Precision Scientific Co.* E. H. Sargent & Co. Schaar & Co. Scientific Glass Apparatus Co.* Tenso-Lab, Inc. Arthur H. Thomas Co. U. S. Testing Co. Wilkens-Anderson Co.
Aloe Scientific Division of A. S. Aloe Co. American Hospital Supply Corp. Burrell Corp. Chemical Rubber Co.* Chicago Apparatus Co. Erb & Gray Scientific, Inc. Fisher Scientific Co.* Emil Greiner Co. Harshaw Scientific Division of Harshaw Chemical Co. Kern Laboratory Supply Co. Labline, Inc. Arthur S. LaPine & Co. New York Laboratory Supply Co. Palo Laboratory Supplies, Inc. Precision Scientific Co.* Ε. Η. Sargent & Co.* Schaar & Co. Scientific Glass Apparatus Co. Tenso-Lab, Inc. Arthur H. Thomas Co. U. S. Testing Co. Wilkens-Anderson Co. Will Corp. 154. GREASE WORKING PARATUS
DETERMINATION
158.
AP
Interest?
POLAROGRAPHY? We offer a wide selection of polarographic reagents, particularly quaternary ammonium compounds, very highly purified especially for polarographic use. Let us send you a complete list.
NON-AQUEOUS TITRATIONS?
DISTILLATION APPARATUS
Ace Glass, Inc.* Aloe Scientific Division of A. S. Aloe Co. American Hospital Supply Corp. American Instrument Co.* Burrell Corp. Chemical Rubber Co.* Chicago Apparatus Co. Corning Glass Works* Engelhard Industries* Erb & Gray Scientific, Inc. Fisher Scientific Co. Emil Greiner Co. Harshaw Scientific Division of Harshaw Chemical Co. Kern Laboratory Supply Co. Kontes Glass Co.* Labline, Inc.* Arthur S. LaPine & Co. Microchemical Specialties* New York Laboratory Supply Co. Palo Laboratory Supplies, Inc. Podijielniak, Inc.* Precision Scientific Co.* Ε. Η. Sargent & Co.* Scientific Glass Apparatus Co.* Tenso-Lab, Inc. Arthur H. Thomas Co. U. S. Testing Co. Wilkens-Anderson Co. Will Corp. 153.
What Is Your
Harshaw Scientific Division of Harshaw Chemical Co. Kern Laboratory Supply Co. Arthur S. LaPine & Co. New York Laboratory Supply Co. Palo Laboratory Supplies, Inc. Precision Scientific Co.* E. H. Sargent & Co. Schaar & Co. Scientific Glass Apparatus Co. Tenso-Lab, Inc. Arthur H. Thomas Co. U. S. Testing Co. Wilkens-Anderson Co. Will Corp.
Kern Laboratory Supply Co. Labline, Inc.* Arthur S. Lapine & Co. New York Laboratory Supply Co. Palo Laboratory Supplies, Inc. Precision Scientific Co.* E. H. Sargent & Co. Schaar & Co. Scientific Glass Apparatus Co. Tenso-Lab, Inc. Arthur H. Thomas Co. U. S. Testing Co. Wilkens-Anderson Co. Will Corp.
APPA
The very best reagent for potentiometric titrations of acids is Tetra-n-butylammonium Hydroxide. We supply it as a solution in methanol or in water. We will gladly send you more information.
DETERMINATION OF ORGANIC HALOGENS? We package a ready-to-use solution of sodium biphenyl which will quickly and easily convert organi cally combined chlorine, bromine, or iodine to titratable ionic form. Traces or large amounts of halogens in even the most refractory molecules can be decomposed without the use of expensive, time-consuming bomb or combustion apparatus. May we send you more information on our ORGANIC HALOGEN RE AGENT? For literature on any of these items circle Nos. 62A-1, 62A-2, 62A-3 on the Readers' Service Card, or address inquiries directly to us.
SOUTHWESTERN ANALYTICAL CHEMICALS P. O. Box 485, Austin 63, Texas
Tel. GR 6-9379
MEASURE MOLECULAR WEIGHT AND PARTICLE SIZE
OXIDATION APPARATUS
Aloe Scientific Division of A. S. Aloe Co. American Instrument Co.* Burrell Corp. Chemical Rubber Co.* Chicago Apparatus Co. Erb & Gray Scientific, Inc. Fisher Scientific Co. Emil Greiner Co. Harshaw Scientific Division of Harshaw Chemical Co. Kern Laboratory Supply Co. Labline, Inc. Laboratory Equipment Corp.* Arthur S. LaPine & Co. New York Laboratory Supply Co. Palo Laboratory Supplies, Inc. Precision Scientific Co.* E. H. Sargent & Co. Schaar & Co. Scientific Glass Apparatus Co. Tenso-Lab, Inc. Arthur H. Thomas Co. U. S. Testing Co. Wilkens-Anderson Co. 159. PENETROMETERS Aloe Scientific Division of A. S. Aloe Co. American Instrument Co.* Burrell Corp. Chemical Rubber Co.* Chicago Apparatus Co. Erb & Gray Scientific, Inc. Fisher Scientific Co. Emil Greiner Co. Harshaw Scientific Division of Harshaw Chemical Co. Kern Laboratory Supply Co. Labline, Inc.*
NEW BRICE-PHOENIX UNIVERSAL LIGHT SCATTERING PHOTOMETER Measures: 1. Absolute Turbidity 2. Dissymmetry 3. Depolarization This instrument is listed in U.S. Government specifi cations for the evaluation of certain clinical materials.
PHOENIX PRECISION INSTRUMENT COMPANY 3805 N . 5th St.
Philadelphia 4 0 , Pa.
Circle No. 79 A on Readers' Service Card
VOL. 3 1 , NO. 4, APRIL 1959
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41 A
