V O L U M E 21, NO. 12, D E C E M B E R 1 9 4 9 5A

Podbielniak, Inc., Announces the NEW HYPER-CAL . . .

MINIATURE HYPER-CAL and

DISTILLATION APPARATUS A p p l i c a b l e t o m i x t u r e s b o i l i n g f r o m —40° t o + 3 5 0 ° C . o v e r t h e p r e s s u r e r a n g e f r o m a t m o s p h e r i c t o 3 m m H g . A b s . o r l o w e r , w i t h f r a c t i o n a t i o n e f f i c i enc ies f r o m 50 t o 300 t h e o r e t i c a l p l a t e s d e p e n d i n g o n c o l u m n l e n g t h .

AVAILABLE WITH HIGH EFFICIENCY COLUMNS PACKED WITH

Jldi-QOâ WluAlc+Uf JleU-BcuHÂ Jldi-Pak

PODBIELNIAK HYPER-CAL PRECISE FRACTIONAL DISTILLATION ANALYSIS APPARATUS * AUTOMATIC CONTROL OF . . . boil u p ra te , distilla­

tion pressure , reflux ratio a n d " c u t " tempera tures — distillate t empera tu re r e c o r d e d automatically.

* MULTI -RANGE RECORDING POTENTIOMETER . . . amplified t empera ture measurement thru sensitive spans of 3.2, 1.6 a n d 0.8 mv over 19 mv r a n g e . . . t empera tu re differences of 0.05°C. easily discernible .

* INTERCHANGEABLE COLUMNS AND KETTLES . . . column capaci t ies up to 4 l i ters/hr . , efficiencies from 50 to 300 plates; kettles to 12 liters.

* H E L I - G R I D , W H I R L I N G HEL I -BAND, HELI -PAK . . . choice of th ree un ique pack ings des igned to meet most fractionation requi rements of efficiency, capacity, ho ldup a n d pressure d rop .

* SUPERIOR COLUMN DESIGN . . . s turdy construct ion . . . vacuum jacketed, spher ica l g r o u n d glass joints . . . in tegral take-off h e a d . . . low heat loss, multiple re­flector, v a c u u m jacket assures near adiabat ic opera­tion . . . jacket hea te rs not requi red .

* COMPLETE operat ion

PACKAGED ASSEMBLY . . . r eady for . equ ipped with controls a n d accessories

for either a tmospheric or v a c u u m distillation.

PODBIELNIAK MINIATURE HYPER-CAL FRACTIONAL DISTILLATION ANALYSIS APPARATUS

LOW HOLDUP fractionated.

. . samples as small as 2 cc effectively

WIDE OPERATING TEMPERATURE RANGE . . . - 4 0 ° to + 3 0 0 ° C . — vacuum jacketed kettle — heat loss at 100°C. less than 2 watts.

ATMOSPHERIC OR VACUUM OPERATION . . . pres­sures as low as 1 mm. Hg. Abs. automatically controlled.

PODBIELNIAK, INC.

AUTOMATIC REFLUX RATIO CONTROL holdup, integral , automatic take-off head .

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3 4 1 Ε. O H I O S T R E E T , C H I C A G O 1 1 , I L L I N O I S

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