U. S. STONEWARE - Analytical Chemistry (ACS Publications)

Chem. , 1964, 36 (3), pp 120A–120A. DOI: 10.1021/ac60209a811. Publication Date: March 1964. ACS Legacy Archive. Cite this:Anal. Chem. 1964, 36, 3, 1...
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Precise, Rapid Determinations of Solution Concentrations with the Goldberg T/C* Refractometer used as a fr concentrimeter^ C o u n t l e s s A p p l i c a t i o n s : T h e N e w Model 10402 Goldberg T / C * Refractometer can be used as a "concentrimeter" t o check a n d adjust concentrations of laboratory reagents a n d preparations, pharmacy batches a n d prescriptions. It's ideal for deter-

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m i n a t i o n of p e r cent composition a n d concentration of p u r e solutions such as salts,

TYGor plastic

TUBING

sugars, acids, or those of relatively fixed component ratios such as sea water or sodium hypochlorite; of refractive index of p u r e liquids a n d liquid mixtures. It's a n ideal teaching a n d research tool for chemistry and physics laboratories dealing with refraction or the need to measure concentrative properties of solutions, concentration, specific gravity, freezing p o i n t depression, molarity, etc. A u t o m a t i c T e m p e r a t u r e C o m p e n s a t i o n : U n i q u e , hermetically-sealed

liquid

prism eliminates error due to temperature changes. I n s t a n t R e a d i n g s : Read index of refraction and index of refraction

difference

direct from built-in double scale. S m a l l S a m p l e N e e d e d : N o m o r e t h a n 0.02 ml . . . a single d r o p of solution, is needed for immediate, inexpensive microanalysis of valuable solutions.

• Flexible

A c c u r a t e : Refractive index scale reads directly to .0002. From this, .0001 may be

• Glass-clear

t o large bench-type A b b e refractometers. These results m a y b e obtained anywhere.

• Chemically inert

T h e new Goldberg Refractometer and its use as a "concentrimeter" were developed

• 73 Standard sizes

of Illinois College of Medicine.

estimated easily. T h i s is equivalent to 0.1 g m . % solute a n d comparable in accuracy N o water bath or temperature controller is needed.

in cooperation w i t h D r . A. V. Wolf, H e a d of the Dept. of Physiology, University

224-H

Plastics S Synthetics Division

U. S. STONEWARE

American

Optical

C O M PAN Y INSTRUMENT DIVISION, BUFFALO 13, N I W YORK

IN CANADA w r i t e - -P.O. Circle No. 188 on Readers' Service Card

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ANALYTICAL CHEMISTRY

Name Address City

AKRON 9 , OHIO

120 A

Dept. CA8 Gentlemen : Please send complete information on the Goldberg T / C Refractometer.

. Zone .

State .

Box 130, Postal Station R, Toronto 17, Ontario

Circle No. 22 on Readers' Service Card