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a new choice in spinning band stills
The Kontes Spinning Band Micro Still—a greatly improved modifica tion of the Piros-Glover* spinning band still. We've redesigned and repackaged a still of remarkable accuracy and con venience. And we've manufactured it to be shipped completely assembled and ready for operation ! The operating characteristics of this new Kontes still tell the story: Size of charge: 2 to 70 ml. Pressure range: Atmospheric to less than 1 mm. Hg absolute. Holdup: Using di-butyl phthalate, holdup was found
to be between 0.5 and 0.7 ml. at nor mal boilup rates and a 1 mm. Hg ab solute head pressure. Boilup rate: Varies from 20 to 100 ml/hr. Take-off rate: Rate is held below 2 ml/hr. for efficient fractionation. Efficiency to 155+ H.E.T.P. dependent upon boil up rate, rotor speed, and sample characteristics. Pressure drop: At a 40 ml/hr. boilup rate of di-butyl phthalate at 1 mm. Hg at the head, the pressure drop through the col umn is 1.5 mm. Hg. And, since control is such an impor tant aspect of precise fractionation, we've developed compact, s o l i d -
state controls for an air preheater, column jacket, and pot isolation chamber and pot. The motor speed control—also solid state—is an integral part of the unit, as can be the direct reading pyrom eter gage and the thermocouple switching junction. This junction al lows monitoring of seven locations throughout the system. For complete technical data, prices and information on accessories, write for Bulletin SBS-10, or contact your Kontes man.
KONTES Vineland, N.J. 0 8 3 6 0
* A s manufactured by our affiliate Konf.es/Martin under patent #2,608,528.
Regional Distributors: KONTES OF I L L I N O I S , Evanston, Illinois · KONTES OF CALIFORNIA, Berkeley, California CIRCLE 1 1 0 O N READER SERVICE CARD
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