DIRECT DIGITAL
PRESENTATION
INSTANTLY AT THE TURN OF A SWITCH -
Coleman MODEL 46 Spectrophotometer gives rapid, precise,
total information never been a spectrophotometer like Model 46. perform more photometric techniques than any other instrument in its price range. It’s the FIRST UV-VIS spectrophotometer with built-in, digital presentation of transmittance, absorbance and concentration. FIRST spectrophotometer with built-in presentation of cell compartment temperature. FIRST spectrophotometer with 7-segment electronic display —the largest available. FIRST spectrophotometer with extended working range photomultiplier. And it’s so simple to use. After set-up, operation is performed with one knob. Since the digits are sharp and clear and fully " high, the answer can be read from any angle. Readout: 3% digits.
There has
It
The revolutionary, wide-range phototube offers uniform, abundant energy across its entire range from 195 to 800 nm. Sensitivity can be increased up to 5X for at the flip of a switch. abnormal samples
can
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Model 46 incorporates the proven optical system of the Model 139 with the latest advances in solid state electronics. Resolution is 0.2 nm over the entire range. Wavelength accuracy is ±0.5 nm. Wavelength reproducibility is 0.1 nm. Photometric reproducibility is ±0.001A or ±0.1 %T. The unique feature of cell compartment temperature readout permits monitoring from 15° to 40°C, with a resolution of 0.1°C. Eleven accessories adapt Model 46 to range of applications.
A beautifully illustrated, colorful 24-page bulletin will be sent on request. Ask us for a copy.
LABOR ATO A P R A R AT A
F5.
—t.CD BLOOMFIELD,
O
Boston Mass.
Danbury Conn.
Branches:
*
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NEW *
INSTRUMENT CHEMICALS GLASS WA
TUS
CD JERSEY
T-T
.
Elk Grove Village III.
tremendous
a
*
Fullerton Calif.
*
Philadelphia Penna.
*
R Y
.
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U S R E
Silver Spring Md.
Syracuse N. Y.
*
Circle No. 66 on Readers’ Service Card
ANALYTICAL CHEMISTRY, VOL. 42, NO. 4, APRIL 1970
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