28 A
ANALYTICAL
THE WELCH
CHEMISTRY
DENSITOMETER
DENSICHRON
For Light-Measuring Operations in Scientific Research and Industrial Process Control.
UNSURPASSED STABILITY EXCEPTIONAL LIGHT SENSITIVITY PATENTED MAGNETIC MODULATION N O ZERO ADJUSTMENT CONVENIENT SMALL SIZE 5 χ VA x 13 IN. LIGHT IN WEIGHT—ONLY 11 Vz POUNDS
No. 2150
The SPECIAL FEATURES OF T H E DENSICHRON* qualify it for use in many light-measur ing operations in scientific research and industrial process control. Some of the laboratory applications for which the DENSICHRON is particularly well adapted are—
PHOTOMICROGRAPHY CHROMATOGRAPHY* REFLECTOMETRY MICRODENSITOMETRY COLORIMETRY *See "Quantitative Paper Chromatography for Students" by Potion, A. R., Jr. Chem. Educ. 28, 629 (1951).
The DENSICHRON is supplied complete with a blue-sensitive light probe (or red if specified), five measuring apertures, a cone with l/s inch aperture, and metal support for the probe unit. The current consumption is 30 watts. For operation on 115 volts—60 cycle AC only— WRITE FOR 12-PAGE BOOKLET GIVING OPERATION CURVES, RESULTS OF LABORATORY TESTS AND OTHER VALUABLE INFORMATION. Reflection Unit Accessory with Voltage Regulated Transformer—$75.00
W.
M.
WELCH
SCIENTIFIC ESTABLISHED
1515 S e d g w i c k S t r e e t Dept. A
_ „.ft „ ESCll $ Z Z 5 . * R e g . U. S. P a t . Office.
COMPANY
1880
C h i c a g o , I l l i n o i s , U.S.A.
