Haze measurement..a valuable analytical tool Photo-Nephelometry measures haze and turbidity in liquids, at extremely low concentrations Clarity of Whiskey, Beer, and Other Beverages One of the most widespread and effective applications of Coleman Photo-Nephelometry is the measurement of haze in whiskies, wines and other beverages. Evaluation of filters and filter media and the control of haze in bottled whiskies is now a standard procedure throughout the distilling industry. Nephelometry precisely predicts the final clarity of the finished product. Sterility of Biologicals The measurement and control of clarity and sterility of parenterals such as Penicillin, Streptomycin, Dihydrostreptomycin, Neomycin Sulfate, and Vitamin Solutions is an important use of Nephelometry. Precipitates in Industrial Waters Purity and suitability of industrial waters and other liquids is easily evaluated with the Nephelometer, especially at very low concentrations. For example: Electric generating plants now use Coleman Nephelometers for the evaluation and control of feed waters for high pressure boilers. Control is accomplished by Nephelometric measurement of calcium (Range 0.0-0.5 PPM) in the feed water.
Operation is simple. Routine work can easily be handled by people with limited training.
Bacteriological Growth Rates and Effects of Nutrients and Inhibitors In bacteriology the study of the effects of nutrients and inhibitors on growth rates of bacteria has been given new impetus and significance by the simplicity and precision of the Nephelometric method. These studies include a wide variety of bacterial types, including: Leptospira, Actinomyces Bovis, Tubercle Bacilli, Esch. Coli, Staphylococci. Measurement of Oils and Fats The Nephelometer is useful in determination of butter fat content in dairy products, and has similarly been helpful in assay of cholesterol in blood chemistry.
Coleman Certified NephelosSlandards express en I ire haze range on a c o n t i n u o u s n u m e r i c a l scale.
Two models. Coleman Nephelometer (Model 7) for Nephelometry, and Coleman Nepho-Colorimeter (Model 9) for Nephelometry and Colorimetry, Ask for Bulletins B-213 and B-213.
COLEMAN NEPHELOS SYSTEM
A Precise Notation for Haze The Coleman Nephelos Standards used with a Coleman Nephelometer provide an accurate numerical notation system. Haze data can be expressed on a fixed, numerical scale to set standards or reproduce procedures.
for complete data . . . write Dept. A, Coleman Instruments, Inc., 318 Madison St., Maywood, III.
For further information, circle number 11 A on Readers' Service Card, page 73 A
VOLUME
28,
NO.
10,
OCTOBER
1956
11 A
