V O L U M E 2 2, NO. 12, D E C E M B E R
39 A
19S0
Visual Extinction Type
TURBIDIMETER Recommended especially for the rapid determination of sulfur and sulfates in connection with the routine analysis of COAL & COKE — O I L & PETROLEUM P R O D U C T S — BOILER W A TERS — C H R O M I U M PLAT I N G S O L U T I O N S — RUBBER — FOODSTUFFS — etc.
FARRAND
PHOTOELECTRIC
Sturdily constructed — easy to op erate — moderately priced.
FLUOROMETER
Furnished with constant-voltage transformer for AC operation. Also available for D C operation from dry cells. Parr Spec. 2400 gives complete details.
"One of the chief advantages of your fluorometer is its tremendous range of sensitivity" T h e Farrand Fluorometer provides stability and linear response over a wide range of sensitivities for measure ments of extremely low concentrations in Micro or M a c r o volumes of solution. Suitable for all Fluorometric methods of analysesThiamin-Riboflavin- Vitamins and their derivativesQuinine - Atabrine - P o r p h y r i n - Chlorophyl - Drugs - Oils Metal complexes, O r g a n i c o r I n o r g a n i c c o m p o u n d s . Bulletin
PARR
INSTRUMENT COMPANY · Moline, I11.
803 on
request
F A R R A N D O P T I C A L CO., Inc. Precision Optics, Electronic and Scientific Instruments BRONX BLVD. & E. 238TH ST.
NEW YORK 66, N. Y.
GLASS ABSORPTION CELLS OF
FINE
MADE BY
Complete Electrophoresis Apparatus SCIENTIFIC APPARATUS Klett-Summerson Photoelectric Colorimeters Colorimeters - Nephelometers - FluorimetersBio-Colorimeters - Comparators - Glass Stand ards - Glass Cells - Klett Reagents
KLETT
QUALITY
KLETT
MANUFACTURING CO. 177 E A S T 8 7 T H STREET NEW YORK Ν . Υ.
