TIME, SEPTEMBER 28, 1953
Coleman's Ounce of Prevention Protects Clarity of Schenley Whiskies Schenley was the first distiller to use the Coleman Photo-Nephelometer for routine testing of whiskey samples from the bottling line. In a recent ad in Time, Schenley said : f?
i t makes certain t h a t t h e whiskey will look a n d t a s t e t h e s a m e m o n t h s l a t e r as it does a t t h a t m o m e n t . " * Cloudiness or other undesirable cumu lative factors in products can often be forecast by haze measurements during production. To detect very faint haze as it forms, an ultra-sensitive instru ment is needed. The Coleman PhotoNephelometer can measure haze at levels far below the ability of the human eye to detect it. The Coleman Photo-Nephelometer measures light reflected from suspended particles. Used with Coleman Certified Nephelos Standards it constitutes an accurate means for measuring and describing "haze" in terms of simple numbers, easily understandable and readily reproducible.
Any substance which can be isolated as a finely divided precipitate can be measured quantitatively with a Nephelometer. When so used, the instrument is very rapid. It eliminates from the usual gravimetric method the five most tedious steps: filtering, washing, drying,_ cooling and weighing.
Write for folder—"Nephelometry: A Short Cut to Precision Chemical Analysis." Dept. Α., Coleman Instruments, Inc., Maywood, 111.
COLEMAN NEPHELOMETERS 'The picture and quotation are reproduced with the permission of Schenley Distillers, Inc. 32 A
ANALYTICAL
CHEMISTRY
