Another
Fisher
Solution
to a Laboratory
Problem
Photo Courtesy Jones a n d Laughlîn S t e e l C o r p o r a t i o n , Pittsburgh, P a .
Three eyes are better than two ASK the analytical chemists at Jones and Laughlin Steel Corporation w h o used t o sweat out d e l i c a t e chromium and vanadium analyses of pig iron and steel while production sometimes waited for what seemed to be hours. Different chemists—relying on their own t w o eyes—would obtain different results. Seldom could they be certain of the faint pink permanganate titration endpoint. Most annoying was the indicator's habit of fading out completely in the presence of a little oxidizing material. V O L U M E
3 2,
NO.
10
»
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And the problem was by n o means unique to J&L. The solution to the problem was a Fisher Titrimeter w i t h its supersensitive electrical eye. Jones and Laughlin analytical chemists developed special procedures for using the Titrimeter, and the result was fast, accurate analyses . . . with as little as 0.009 per cent vanadium causing the Titrimeter * 'eye* ' to open wiuc at the precise endpoint voltage. This time-tested solution of the third eye is as good today as it -was fifteen years ago when J&L first employed it. » M A R C H
8,
1954
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