ONE-PIECE
MICRO
KJELDAHL
DISTILLING
APPARATUS
• With Electric Steam Generator
KJELDAHL DISTILLING APPARATUS, MICRO, One-Piece Model, with Electric Steam Generator, Α. Η. Τ. Co. Specification, in accordance with the specifications of the Committee on Microchemical Apparatus, Division of Analytical Chemistry, American Chemical Society. See Analytical Chemistry, Vol. 23, No. 3 (March 1957), pp. 527528. Consisting of a principal glass part made of Pyrex brand glass, which incorporates a steam jacketed distillation flask with spray traps, filling funnel and condenser, electrically heated steam generator, tripod support and transformer for heat regulation. T h e distilling flask proper, i.e., inner jacket of principal glass part, is 175 m m long, with body 35 m m diameter, enclosed in a steam jacket 225 m m long X 60 m m outside diameter. T h e flask has two T-shaped traps at top in separate bulbs, 55 m m 7497. diameter, for effectively retarding alkali spray, and is sealed to a vertical, all-glass, West type condenser, 250 m m long X 18 m m outside diameter. Side filling 7497. Kjeldahl Distilling Apparatus, Micro, Onefunnel, with standard taper No. 4 stopcock, empties into Piece Model, with Electric Steam Generator, A.H.T. bottom of distilling flask through a bent glass tube, 7 m m Co. Specification, complete as above described, including tripod, 8 inches diameter, and Transformer. Power condiameter, through which steam in outer jacket also enters sumption 750 watts. For use on 115 volts, 50 or 60 cycles, distilling flask. Condensate is drained through side arm single phase, a.c. only 160.66 with standard taper No. 4 stopcock at bottom of outer jacket. Overall dimensions of principal glass part Accessory and Replacement Parts approximately 520 m m high X 290 m m maximum width; interchangeable ground glass joint for connection 7497-C. Principal Glass Part, only, as supplied with 7497, of Pyrex brand glass, with standard taper 34/45 interchangeable ground j o i n t . . 84.00 to steam generator, inner member size standard taper 34/45. 7497-E. Steam Generator (Kettle), Electric, only, as supplied with 7497. T h e steam generator consists of a reaction kettle of Pyrex brand glass, with cover clamp, 2000 ml capacity, with rigidly suspended Electric Immersion Heater, 750watt. T h e heating element is near bottom of reaction flask enclosed in a horizontal one-and-one-half turn coil of Stainless steel tubing. Heater terminals are connected within a two-piece, dismountable Bakélite fitting to a 3-ft. cord with plug. A Variable Autotransformer permits convenient control of boiling rate by providing continuous wattage selection u p to rated capacity of heating element. Complete with tripod for stable support of steam generator and solid rubber stopper for fourth opening in steam generator cover, through which water is replenished.
SYMBOL OF QUALITY
A . H . T . CO. SPECIFICATION
LABORATORY APPARATUS I
Complete with reaction flask with clamp, 2000 ml capacity, and 7497-F Immersion Heater. With 3-ft. cord and plug for connection to suitable power regulator; for use on 115 volts, a.c. or d.c. Without transformer or tripod 52.00 7497-F. H e a t e r , Immersion, Return-Bend Tubular T y p e , Electric' only, as supplied with 7497-E. Designed for use in reaction flask, 2000 ml capacity. Enclosed in Stainless steel tubing, 9/32-inch diameter, with heating element in horizontal, one-and-one-half-turn coil, 43/i inches overall diameter. Unheated terminal arms are parallel, 31/2 inches apart, rising from opposite sides of coil. Overall height 91/4 inches. Complete with two-piece, Bakélite terminal mounting block, with 3-ft. cord and plug for connection to suitable power regulator, and two one-hole rubber stoppers for mounting heater terminals in openings of reaction flask cover. With directions for mounting. Power consumption 750 watts; for use on 115 volts, a.c. or d.c 17.5Θ 5450-K.
Cover C l a m p , only
9.35
ARTHUR H. THOMAS COMPANY Laboratory Apparatus Reagants WEST W A S H I N G T O N SQUARE
PHILADELPHIA 5, PA.
Teletype Services: Western U n i o n W U X and Bell System PH-72
For f u r t h e r
18 A
information, circle
number 18 A on Readers' Service Card, page 41 A
ANALYTICAL
CHEMISTRY
