G. Frederick Smith Chemical Company, Inc.

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AMINO ACID ANALYZER Model Κ 5000 FOR SEPARATION, IDENTIFICATION, AND QUANTITATIVE ANALYSIS OF AMINO COMPOUNDS For complete details write Dept. Κ for Bulletin Κ 5000 Ρ Ρ I PHOENIX PRECISION INSTRUMENT COMPANY 3803-05 NORTH FIFTH ST., PHILADELPHIA 40, PENNSYLVANIA Circle No. 76 A on Readers' Service Card ANALYTICAL REAGENTS SPECIALTY CHEMICALS PRIMARY STANDARDS R<ac,en!s and apparatus for modern analysis Perchloric Acid and Perchlorates Cerium (III), and (IV), Reagents Periodic Acid and Periodates Oxidation-Reduction Indicators Iodic Acid and lodates Organic Précipitants Primary Standards for Neutralization and Oxidation-Reduction Dehydrating Agents Anhydrous Magnesium Perchlorate Indicating Anhydrous Magnesium Perchlorate Anhydrous Barium Perchlorate Anhydrocel (Anhydrous Calcium Sulfate) Primary Standard Acids and Bases 4-Aminopyridine Trishydroxymethylaminomethane Sodium Hydrogen Diglycoltate Organic Précipitants Cupferron 8-Hydroxyquinaldine Nioxime Furildioxime Absorbents for Carbon Dioxide Mikohbite Indicators for EDTA Titrations Cakein Modified Calcein Eriochrome Black Τ Calmagite Cobalt Compounds Hexamminocobalti Chloride Chioropentamminocobalti Chloride Potassium Cobalticyanide Acids Double Distilled from Vycor Perchloric Acid Sulfuric Acid Nitric Acid Spectrophotometric Reagents for Iron, Copper, and Cobalt 1, 10-Phenanthroline Cuproine 2,2'-Bipyridine Substituted Phenanthrolines Neucuproine 2,2',2"-Terpyridine Bathophenanthroline Bathocuproine Tripyridyl-s-triazine V. . G. Frederick Smith Chemical Company, Inc. V ;,· i < 867 McKinley Ave., Columbus 22, Ohio 1 f'l " < ' P. O. Box 5906. Station D, ' • · • Telephone: Capital 4-5343 ray spectrum recorder; fast-slow coincidence circuit, Model DZ4; linear count rate meter, Model DM12. C. W. Brabender Instruments, Inc. 50 East Wesley St. South Hackensack, N. J. Manufactures physical testing instruments for bench and on-stream testing and control. Plasticimeters, viscometers, moisture;testers. C. A. Brinkmann & Co., Inc. Brinkmann Instruments, Inc. Brinkmann House 115 Cutter Mill Rd. Great Neck, L. Ι., Ν. Υ. Specialists in imported balances (Sartorius and VDF), optical equipment (Zeiss micro- scopes, spectrophotometers, polarimeters, ref ractometers, interferometers), Heraeus micro combustion furnaces, high temper- ature furnaces, vacuum drying ovens, Netzsch dilatometers, differential thermo- analyzers and plasticimeters, Haake ultra thermostats and automatic recording vis- cosimeters, AGFA PHYSIK testing equip- ment for the plastics and rubber industries Brinkmann instruments manufactures photo- micrographic equipment, exposure meters for micro cameras, micromanipulators for chemi- cal and electronic applications, micro cine equipment. Briscoe Manufacturing Co. 1055 Gibbard Ave. Columbus, Ohio Briskeat flexible electrical heating tapes. Available in many widths, lengths, and wattages. Line includes standard, heavy, and silicone, rubber-insulated tapes, silicone rubber heating blankets, drum heaters, and laboratory heating jackets. Briskeat sold through select laboratory supply houses. Bronwill Scientific Div. Will Corp. Rochester, N.Y. Distributors of laboratory supplies in- cluding Willems Polytron homogenizer dis- perser. Brookfield Engineering Laboratories, Inc. 240 Cushing St. Stoughfon, Mass. Manufactures a complete line of visco- metric equipment for both laboratory and industrial control work. The Synchrolec- tric viscometer provides the base for a com- plete viscosity measuring system. Brook- field Viscometran is a process-mounted in- dustrial viscometer for continuous recording and control. Brooks Rotameter Co. Box 432 Lansdale, Pa. Rotameter flow instruments, transmitters, controls for every service. Specific gravity indicators, diaphragm seals for pressure in- strument protection. Burrell Corp. 2223 Fifth Ave. Pittsburgh 19, Pa. Manufactures and distributes a diversi- fied line of scientific equipment including gas analysis apparatus and reagents, fur- naces, shakers, automatic and recording analytical balances, rheometers, and sim- ilar equipment. Cahn Instrument Co. 14511 Paramount Blvd. Paramount, Calif. Manufactures the Cahn Electrobalance, a rugged and portable electromagnetic balance 62 A Circle No. 56 A on Readers' Service Card ANALYTICAL CHEMISTRY

Transcript of G. Frederick Smith Chemical Company, Inc.

AMINO ACID ANALYZER Model Κ 5000

FOR SEPARATION, IDENTIFICATION, AND QUANTITATIVE ANALYSIS OF AMINO COMPOUNDS

For complete details write Dept. Κ for Bulletin Κ 5000

Ρ Ρ I PHOENIX PRECISION INSTRUMENT COMPANY

3 8 0 3 - 0 5 N O R T H F IFTH ST., P H I L A D E L P H I A 4 0 , P E N N S Y L V A N I A Circle No. 76 A on Readers' Service Card

ANALYTICAL REAGENTS SPECIALTY CHEMICALS

PRIMARY STANDARDS R<ac,en!s a n d a p p a r a t u s f o r m o d e r n a n a l y s i s

Perchloric Acid and Perchlorates Cerium (III), and (IV), Reagents Periodic Acid and Periodates Oxidation-Reduction Indicators Iodic Acid and lodates Organic Précipitants

Primary Standards for Neutralization and Oxidation-Reduction

Dehydrating Agents

Anhydrous Magnesium Perchlorate Indicating Anhydrous Magnesium Perchlorate Anhydrous Barium Perchlorate Anhydrocel (Anhydrous Calcium Sulfate)

Primary Standard Acids and Bases 4-Aminopyr idine Trishydroxymethylaminomethane Sodium Hydrogen Diglycoltate

Organic Précipitants Cupferron 8-Hydroxyquinald ine Nioxime Furildioxime

Absorbents for Carbon Dioxide Mikohbite

Indicators for EDTA Titrations Cake in Modi f ied Calcein Eriochrome Black Τ Calmagi te

Cobalt Compounds Hexamminocobalt i Chloride Chioropentamminocobalt i Chloride Potassium Cobal t icyanide

Acids Double Distilled from Vycor Perchloric Acid Sulfuric Acid Nitric Acid

Spectrophotometric Reagents for Iron, Copper, and Cobalt 1 , 10-Phenanthroline Cuproine 2,2 ' -Bipyr id ine Substituted Phenanthrolines Neucuproine 2 ,2 ' ,2 " -Terpyr id ine Bathophenanthroline Bathocuproine Tr ipyr idyl -s- t r iaz ine

V . . G. Frederick Smith Chemical Company, Inc. V ;,· i < 867 McKinley Ave . , Columbus 2 2 , Ohio

1 f'l " < ' P. O. Box 5906. Station D, ' • · • Telephone: Capital 4 -5343

ray spectrum recorder; fast-slow coincidence circuit, Model DZ4; linear count rate meter, Model DM12.

C. W. Brabender Instruments, Inc. 50 East Wesley St. South Hackensack, N . J .

Manufactures physical testing instruments for bench and on-stream testing and control. Plasticimeters, viscometers, moisture;testers.

C. A . Brinkmann & Co., Inc. Brinkmann Instruments, Inc. Brinkmann House 115 Cutter Mi l l Rd. Great Neck, L. Ι . , Ν . Υ.

Specialists in imported balances (Sartorius and VDF), optical equipment (Zeiss micro­scopes, spectrophotometers, polarimeters, ref ractometers, interferometers), Heraeus micro combustion furnaces, high temper­ature furnaces, vacuum drying ovens, Netzsch dilatometers, differential thermo-analyzers and plasticimeters, Haake ultra thermostats and automatic recording vis-cosimeters, AGFA PHYSIK testing equip­ment for the plastics and rubber industries Brinkmann instruments manufactures photo-micrographic equipment, exposure meters for micro cameras, micromanipulators for chemi­cal and electronic applications, micro cine equipment.

Briscoe Manufacturing Co. 1055 Gibbard A v e . Columbus, Ohio

Briskeat flexible electrical heating tapes. Available in many widths, lengths, and wattages. Line includes standard, heavy, and silicone, rubber-insulated tapes, silicone rubber heating blankets, drum heaters, and laboratory heating jackets. Briskeat sold through select laboratory supply houses.

Bronwill Scientific Div. Will Corp. Rochester, N.Y.

Distributors of laboratory supplies in­cluding Willems Polytron homogenizer dis­perser.

Brookfield Engineering Laboratories, Inc. 2 4 0 Cushing St. Stoughfon, Mass.

Manufactures a complete line of visco-metric equipment for both laboratory and industrial control work. The Synchrolec-tric viscometer provides the base for a com­plete viscosity measuring system. Brook-field Viscometran is a process-mounted in­dustrial viscometer for continuous recording and control.

Brooks Rotameter Co. Box 432 Lansdale, Pa.

Rotameter flow instruments, transmitters, controls for every service. Specific gravity indicators, diaphragm seals for pressure in­strument protection.

Burrell Corp. 2223 Fifth A v e . Pittsburgh 19, Pa.

Manufactures and distributes a diversi­fied line of scientific equipment including gas analysis apparatus and reagents, fur­naces, shakers, automatic and recording analytical balances, rheometers, and sim­ilar equipment.

Cahn Instrument Co. 14511 Paramount Blvd. Paramount, Calif.

Manufactures the Cahn Electrobalance, a rugged and portable electromagnetic balance

6 2 A Circle No. 56 A on Readers' Service Card

ANALYTICAL CHEMISTRY