FOR THINGS ULTRAVIOLET call on the specialist NEW high intensity 280 nm lamp meas ures proteins. Miniature PENRAY® lamps calibrate photometers in space, sterilize devices in the laboratory. CHROMATO-VUE® darkrooms help diagnose afflicted children, analyze food impurties, help in the fight against cancer. BLAK-RAY® ultra violet meters assure efficiency of germicidal lamps, measure UV dose in mutation studies, establish repro ducibility of UV experiments in photo chemistry and biological sciences. Every day our products solve similar problems. But then, other people's problems are "our thing." That's why we specialize in ultraviolet. THE BROADEST ULTRAVIOLET LINE HAND LAMPS
Many powerful MINERALIGHT®, BLAK-RAY® models.
PEN-RAY^ LAMPS Standard for wavelength calibration.
CHROMATO-VUE® & TRANSIUUMINATORS Fluorescent darkrooms on a table top. UV METERS-Positive check of germicidal lamp output.
P.C.a.R LAMPS Several intense, cool-burning models.
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ULTRA-VIOLET PRODUCTS, INC. Specialist
in specialty
lamps since 1932
Suite 117 · 5114 Walnut Grove Avenue San Gabriel, California 91778
New Products form to tenths of a second. The Coaglab system offers flexible modes of operation and can be used in conjunc tion with the company's AutoCounter (for platelet counting) or the new Hemolab system. The Coaglab without the platelet counting system costs $13,300; with platelet counting, $21,600. Technicon Instruments Corp., Tarrytown, Ν. Υ. 10591. 914-631-8000 410
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wide linear range high sensitivity O.D. and % Τ microflow cells
Chloride meter made by Evans Electroselenium, Ltd., of England (a new sub sidiary of Corning Glass Works) pro vides readout accurate to ± 1 meq/l. on a typical sample size of 0.2 ml. The instrument is designed for medical ap plications. Model 92 chloride meter costs $750. Corning Glass Works, Medfield, Mass. 02052. 607-962-4444 4 1 1
Automatic elemental analyzer for car bon, hydrogen, nitrogen, and oxygen, Carlo Erba Model 1102, features auto matic sample injection for up to 23 samples. After loading the sample magazine, the analyses proceed au tomatically. The instrument uses auto matic combustion through instantane ous flash pyrolysis and a unique oxy gen injection technique. Two separate reactors, one for CHN and a second for 0.,, as well as two chromatographic columns are used in the system. If used with the Model 1110 electronic integrator, peak integration is obtained simultaneously and automatically. The instrument will perform 23 complete analyses in 6 hr. Model 1102 costs $9800. Sanda, Inc., 130 Presidental Blvd., N., Bala Cynwyd, Pa. 19004. 215-839-0200 412
Circle No. 181 on Readers' Service Card
92 A ·
New UV Detector
ANALYTICAL CHEMISTRY, VOL. 43, NO. 1, JANUARY 1971
Chromatronix Model 200 UV Photometer combines a linear absorbance range up to 3.0 O.D. with very low noise and d r i f t less than .0004 O.D. Measurements can be made on any of ten absorbance ranges (from .01 O.D. full scale to 5.12 O.D. full scale) or on a single 0 to 100% transmittance scale. Recorder outputs of 1 mv and 10 mv are supplemented by a 0 to 1 ma output, which will drive low-cost gaivanometric recorders. Two interchange able plug-in flow cells are available: an Β-μ\ cell for micro-column analyses and a 32-μΙ cell for monitoring preparative separations, density-gradient centrifugation and electrophoresis. Free new technical bulletin. A technical bulletin describing the use of ultrasensi tive UV detectors in liquid chromatogra phy is yours for the asking. Please ad dress us at 2743 Ninth Street, Berkeley, California 94710. Phone (415) 841-7221.
CHROMATRONIX Circle No. 32 on Readers' Service Card
