READERS' INFORMATION SERVICE Refractometers, Chromatographic . 86 A-l Regulators, Voltage 86 A-2 Shakers 27 A-l Spectrographs 90 A-2 Spectrometers 88 A Spectrophotometers 3 A, 41 A, 46 A-l, 54 A, 80 A Stirrers 27 A-3, 34 A-2 Syringes 72 A-2 Transformers 31A Tubing, Plastic 82 A Valves, Globe 85 A-2 Voltage Regulators 34 A-l Voltage Stabilizers 73 A-2 X-ray Diffraction Unit 33 A
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^OftS&t-McCRONE
MICRO COLD STAGE
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69 A 12 A
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For use in micro fusion studies over the range — 100°C to +70°C MICRO COLD STAGE (Micro Melting Point Apparatut), Thomai-McCrone Thermometer
Reading Model. Based on the design described in Analytical Chemistry, Vol. 28, No. 6 (June, 1956), p. 10S8. Provides close temperature control within a working range of -100°C to + 70°C. Bevelled cut-out in top of stage takes a standard 10 X objective. Simplified for convenient insertion of sample and reproducible placement of interchangeable, low temperature thermometers. Heating is by means of a Pyrex brand E-C Radiant Glass plate. Voltage on the heating unit should not exceed 80 volts and a special Variable Transformer is included with the Stage. The manipulator rod for seeding, etc., is inserted into the working chamber through a ball joint. Thermometers are inserted from the side. In use, a stream of inert, precooled gas is passed over the sample and escapes from the stage through a small annular space around the objective. Moisture is removed from the gas stream in a simple Cooling Device, thus minimizing possible icing of the objective.
FIRST CLASS PERMIT NO. 1538 (Sec. 34.9, P.L.&R.) NEW YORK, Ν. Υ.
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6892-6. Micro Cold Stage (Micro Melting Point Apparatus), Thomas-McCrone, with manipulator rod; two thermometers; extra E-C Radiant Glass heating unit; Powerstat voltage transformer; and 6-ft.cord and plug. For use on 115 volts, 60 cycles, a.e. only 179.25 6893-N. "Fusion Method· in Chemical Microscopy", by Walter C. McCrone f/nferscience Publishers, Inc., 1957), 328-pp. Includes techniques for Thomas-McCrone Cold Stage 6.75
More detailed information sent upon request
ARTHUR H. THOMAS CO. Laboratory Apparatus and
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PHILADELPHIA 5, PA. More and more laboratories « I V ON THOMAS Circle No. 71A on Readers' Service Card, page 77 A
