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This Falling Film Molecular Still, suitable for most types of laboratory research in high-vacuum short-path distillation, is now avai lab le . The unit includes distillation column, high-vacuum pumping system, and control pane l—al l mounted as a single unit on a sturdy f rame.

D I S T I L L A T I O N P R O D U C T S , I N C · 7 4 1 R I D G E R O A D W E S T , R O C H E S T E R 1 3 , N E W Y O R K

• Now you can put molecular distillation to work in your own laboratory.

With the Falling Film Molecular Still pic­tured here, you are able to fractionate m a n y substances "undist i l lable" by ordinary methods —and without thermal injury to the mater ial . In general, these substances include na tura l and synthetic materials which are in a liquid state above 80 °C, have low vapor pressures, and molecular weights above 300.

If you are concerned with chemicals of high molecular weight, you should find the Fall ing Film Molecular Still—or other D P I laboratory-scale molecular stills—an indispensable aid. Molecular Distillation can expand greatly the scope of your research—helping you get more complete and more accurate answers to m a n y of your research problems.

Several types of D P I stills are now available to research laboratories. DPI m e n with excep­tional experience in super-vacuum techniques are ready to help you choose the exact molec­ular still to fit your needs. W e invite your inquiry. Use the convenient corner-card below as a reminder.

1320 C H E M I C A L A N D E N G I N E E R I N G N E W S

New answers for your Research problems

with

MOLECULAR DISTILLATION

Pioneering in Molecular Distillation and High Vacuum Research