22 A
ANALYTICAL
CHEMISTRY
Coleman Junior Spectrophotometer MODEL IDEAL
FOR
6A
THE
ANALYTICAL
OR P R O D U C T I O N
LABORATORY
HAS^
• Whether your work is in metals, food stuffs, vitamins or the clinical laboratory, this simplified model of the Universal Spectrophotometer provides simple means of trans mission spectrochemistry measure ments. Its interchangeable scales are ideal for the analytical labora tory requiring a variety of different analyses from a single instrument. The production laboratory has also
First, it determines the exact color (light wave length) most responsive to the considered constituent.
found the instruments useful for rapid determinations of copper,
Second, it is capable of generating light of that exact wave length.
manganese, cobalt, nickel, etc. with the speed of the spectrograph but with greater precision and at much
Third, it accurately measures the intensity of that light as affected by the constituent.
less cost.
For full details write for Bulletin B-211. H-59540 Coleman Junior Spectrophotometer, complete with Plastic Light Shield, Mounting Pads, Removable Transmittance - Density Scale Panel and Operating Instructions . . . . · . . . . $ 3 3 0 . 0 0
The Coleman Junior Spectropho tometer fully meets the three requirements necessary for identi
H-59540-T5 Storage Battery and Charger with connecting cables
fying and for measuring solution
Complete
constituents. PRICES
SUBJECT
TO
stock
CHANCE
$75.00
of cuvettes, adapters, calibrating standards accessories for immediate delivery
WITHOUT
and
other
NOTICE
HARSHAW SCIENTIFIC DIVISION OF THE HARSHAW CHEMICAL CO. CLEVELAND 6, OHIO CLEVELAND
C I N C Ι Ν Ν'ΑΤ I
DETROIT
LOS
ANGELES
PHILADELPHIA
