CSA approved!

heat desiccator interiors up to250 C...safely! G las-Col heating mantle allows you to use your desiccator as a safe, efficient vacuum drying oven

• This Glas-Col heating mantle bears the Canadian Standards Association seal of approval for heating heavy-walled vessels used in vacuum drying of samples. For a small cost, it will convert your desiccator into a safe, efficient vacuum drying oven.

Its uniform heat minimizes chance of thermal strain to glass vessels. And it provides an effective shield in rare instances when vessels do collapse under high vacuum-high pressure conditions.

Glas-Col desiccator heating mantles have been used for years—safely, and with complete success.

Circle No. 35 on Readers' Service

40 A . ANALYTICAL CHEMISTRY

C A T A L O G N U M B E R

D E S I C C A T O R F L A N G E

D I A M E T E R W A T T A G E P R I C E

T M - 2 0 0 T M - 2 0 2 T M - 2 0 4

l e O m m 2 0 0 m m 2 5 0 m m

3 3 0 w - 1 1 5 v 3 8 0 w - 1 1 5 v 3 8 0 w - 1 1 5 v

$ 4 5 . OO 5Y .OO 6 5 . O O

Card

Circle No. 92 on Readers' Service Card

GLAS-COL® Η Ε A Τ I N G M A N T L E S

G l a s - C o l A p p a r a t u s C o m p a n y Dept. AC, 711 Hulman Street, Terre Haute, Indiana 47802

U.S. Patents 2 ,231,506; 2 ,739,220; 2 , 7 3 9 , 2 2 1 ; 2 ,282,078.