CANALCO
NEW PRODUCTS
breaks the TIME BARRIER
IN FRACTION ANALYZING NOW 5 NEW BASE COMPENSATING U. V. FLOW ANALYZERS FOR ALL MAJOR USES • For broadly absorbing materials in the middle U.V. · For specific wave lengths · For monochromatic density studies • For 2 6 0 / 2 8 0 ratios in protein research · For simultaneous monitoring of one to eight columns at one or more w a v e lengths, or multiple analytical procedures. Canalco Analyzers give automatic location and measurement of ultra violet-absorbing materials in flow, with flat base line and full sensitivity maintained in t h e presence of U.V.-absorbing solvents. For use in column chromatography and other flow systems. Any laboratory which collects large quantities of fractions for protein, R N A , D N A , and similar research, invests heavily in man-hours spent making spectrophotometric analyses of individual fractions. C A N A L C O U.V. F L O W A N A L Y Z E R S eliminate t h e large majority of these analyses—by monitoring continuously during fraction collection, and making available a running w r i t t e n record of the U.V. absorbing qualities of each collection tube. Can be used on any type of fraction collector or similar equipment; and with suitable filters, quantitation by curve integration is made possible.
CA Ν A L C Ο
CANAL INDUSTRIAL CORPORATION Dept. F / 4 9 4 0 - 5 1 St. Elmo Avenue, Bethesda 14, Maryland
Model LF micromanipulator has three independent traversing units for as sembly in any desired combination. Adjustable holders are available for electrodes, needles, and other objects. Traverse range is 0 to 125 mm.; direct vernier reading on each traverse is 0.1 mm.; sensitivity, with micro-adjust at tachment, 10 μ. Process & Instru ments. P-39 W a t e r Stream Analyzer The Chemonitor is designed to pro vide continuous on-stream analysis of water, with application to boiled water, condensate and effluent from demineralizers, water softeners, and waste dis posal treatment plants. In analyzing silica in the zero to 300 p.p.b. range, the unit is said to detect concentrations as low as 5 p.p.b. with ± 2 p.p.b. ac curacy. Results are presented on a recorder which can be made to operate an upper-limit switch that, in turn, operates an alarm system. The Chcm onitor can be set up to do single or multiple point analysis, and it is adapt able for transmitting electronic or pneu matic signals. Modular construction and the use of amphenol connectors enable easy removal of any component for service. The unit has a mechanical timer which shuts down the pump and starts a flushing cycle at 6-hr. intervals, and a blower prevents accumulation of fumes. Hagan Chemicals & Controls, Inc. P-40 Melting Point Apparatus New instrument imported from Eng land is said to have fast heating and cooling cycles which enable numerous determinations per day. The following additional advantages are also claimed : clear view optical system enables de tailed and undistorted observation of changes taking place; heat transfer takes place with practically no lag; ad justment to lenses or illumination is unnecessary; no liquids are used for heat transfer; and a fully corrected thermometer ensures accuracy over the entire range. Harshaw Scientific. P-4I -
