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Crystal Products C«IST»l SMIO SIAIf
Performance tested crystals for use as gamma radiation detectors, IR windows and UV components.
The Harsh aw Chemical Co.
HARSHAW
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HARSHAW
Infrared Optical Materials
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Harshaw infrared materials transmit to 70 microns. Available as blanks or polished to your finished specifications.
The Harshaw Chemical Co.
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HARSHAW
1945 { « I 97th St • U n t i l * Qtu MIOG · Pkwi 216 ?Z1130Π
HARSHAW
IR Pressed Pellet Powders
KBr, Csl, and TIBr, IR Pressed Pellet Powders are suitable over a wide spectral and refractive index range.
The Harshaw Chemical Co. SUT! DIVISION
HARSHAW
1945 Eut 9 M Si. · D w t t d .ft»« 0 6 . P I M Jit 721-1300
HARSHAW
Silver Chloride Stan
HARSHAW
This unique IR material is insoluble in water, transmits out to 22 microns, available as windows only .016" thick.
A cinephotomicrographic unit provides time lapse (from 1 to 20 f r a m e s / minute), normal speed and slow mo tion pictures (from 12 to 4 8 frames/ second) with any inverted microscope. Model 5 0 2 , with built-in frame and footage counters, includes controls for the camera drive mechanism and the exposure selector. Accessory equip ment is available to control specimen temperature and to protect against heat and light when film is not being exposed. Sage Instruments, 2 Spring St., White Plains, Ν. Υ. 10601 419
Thin L a y e r C h r o m a t o g r a p h y
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Performance Tested Crystals
Deep field microscope, Model 66-8-DFM, has been developed which is capable of photographing surface irregularities of up to 0.25-inch varia tion in perfect focus. Monocular optics, coupled with an inclined plane mounting platform and eucentric go niometer, achieve a magnification of 200X. Surface strips approximately 0.0003-inch wide may be successively focused and exposed for incremental examination. Electronics & Alloys, Inc., 1 4 3 - 4 9 S. Dean St., Englewood, N . J . 0 7 6 3 1 416
Spectrophotometry
The Harshaw Chemical Co.
HARSHAW
Crystals for use as X-ray monochromators, X-ray detectors, reststrahl plates, and refracting components.
The Model 240 spectrophotometer combines a quartz prism monochromator in a Littrow mounting with a wide range, linear absorbance photom eter. The monochromator has a linear wavelength scale over the range from 185 to 1000 nanometers with an average resolution of 1 nm. The high resolution photometer and light source stabilizers are housed in a modular solid state unit for strip chart recorder operation. Gil ford Instrument Laboratories Inc., Oberlin, Ohio 44074 417
A preparative TLC system features a multi-sandwich chamber, five 20- X 20-cm plates, stacked so that all plates develop simultaneously. Other ingredi ents of the kit, No. 51337, include: a spreader for proper thickness, adsorb ents and UV indicators, glass plates, drying racks and desiccators, and devel oping chambers. An automatic sample streaker is also available to ensure straight sample lines and uniform con centration. Gelman Instrument Co., 600 S. Wagner Rd., Ann Arbor, Mich. 48106 420
T r a c e Impurities
K a r l Fischer T i t r a t i o n
The BSP100 sphere photometer meas ures solution clarity and color indepen dently. Designed for use where clarity analysis is required for the detection of impurities, the self-contained instru ment makes separate measurements of light absorption and scattering. Phoe nix Precision Instrument Co., Inc., 3801 N. Fifth St., Philadelphia, Pa. 19140
The Aqua-Meter, an electrometric Karl Fischer titrator, automates direct and back titrations by solid state circui try. Accurate to 0.07 mg of water, the instrument features adjustable meterrelay with P t / P t electrode, solenoid titrant control, and a delayed shut-off timer for accurate end point determina tion. Bronwill Scientific, 39 Russell St., Rochester, Ν. Υ. 421
The Harshaw Chemical Co.
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HARSHAW
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Your inquiries for complete information are invited.
The Harshaw Chemical Co. 194S East 97th St. · Cleveland, Ohio 44108 > Phone 216 721-8300 Utrecht, Netherlands —Harshaw-Van Der Hoorn N.V. Frankfurt, W. Germany— Harshaw Chemie GmbH Circle No. 22 on Readers' Service Card 136 A
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