V O L U M E 2 0, N O . 3, M A R C H 1 9 4 8 27 A

INDUSTRIAL LABORATORY TABLE A-650

FOR MORE THAN 57 YEARS Peterson laboratory furniture has come through the past half century with a reputation for quality and integrity which, to shrewd buyers, has been the keynote for sound satisfaction. Today, Peterson furniture receives 1st consideration from some of the nation's largest users who have specified "Peterson" for one decade after another.

LEONARDPETERSON & CO., INC

1 2 2 2 - 3 4 FULLERTON AVE,CHICAGO I4.U.SA.

.Coons PORCELAIN COMPANY COLDEN, COLORADO i

" Ρ R Ε C I S ΙΟ N" - D Ο W

DUAL RECORDOMATIC TITRATOR

A valuable new development for the laboratory, designed to cut titration time and work to a fraction . . . the "Precision" - Dow Dual Recordomatic Titrator is a unique instrument, first of its kind on the market. The new Titrator titrates and records automatically, rapidly and accurately. It eliminates all work on the part of the operator except that of preparing solutions and loading the feed unit. It provides a permanent and complete record of titrations superior to curves obtained manually. A dual instrument . . . with two complete titration set-ups . . . it titrates one sample while the second is being prepared and loaded in the feed unit.

The Titrator is recommended for routine control work, as well as for experimental research in chemical, industrial and petroleum laboratories . . . for studying new reactions . . . for determining suitable indicators . . . for acidity determinations on petroleum products (ASTM Method D664) . . . for Mercaptan determina­tions . . . among its many potential uses. Equally well suited for aqueous and non-aqueous media, it may be used with silver, antimony, platinum, calomel or glass electrodes. The instrument is built for con­tinuous, hard duty . . . with sustained accuracy assured throughout its long life. Completely line operated except for a No. 6 dry cell in the potentiometer circuit. Power consumption is only 200 watts.

No. AC40356 $2275.00

ARTHUR S

121 West Hubbard Street Chicago 1 0 , Il l inois

LABORATORY LIBRARY

VOCATIONAL HOME ECONOMICS

till M

RESEARCH LABORATORY

GREAT WESTERN SUGAR COMPANY

ΡΕ Ν V Ε R

LAPINE &COMPANY

L A B O R A T O R Y A P P A R A T U S 8. R E A G E N T S · I N D U S T R I A L C H E M I C A L S