Here's t h e SAFE w a y t o h e a t your F l a s k s -
Battery of72-hter
No oil bath No fire hazard
stills for the production of aminoacids
In many processes t h e use o f glass equipment is necessary t o avoid undesirable catalytic effects due t o traces o f metals from the container. Contamination o f product is also reduced. However, t h e application o f controlled heat, especially to t h e larger vessels, has been difficult. W i t h a Glas-Col Heating Mantle the use of large glass flasks for t h e commercial production o f fine chemicals becomes practicable for the first time. Purity is safeguarded, and t h e even distribution o f heat from t h e Mantle prevents charring o f valuable material. Glas-Col Heating Mantles save time, prevent flooding, reduce glass breakage, and improve laboratory conditions generally. Write for illustrated bookl e t today. Glas-Col Apparatus Company, 1700 So. 7 t h Street, Terre Haute, Indiana.
U. S. Patent No. 2J2$1£06
Each of the two sections of the Glas-Col Heating Mantle contains a Nichrome* heating element spiraled between layers of corrosion-resisting glass d o t h , serving as effective heat insulation. A Talon fastener encircles the two hemispheres and clamps securely around the flask. Temperatures up to 400 C may he obtained, under dependable electrical control. Available for flasks to 72-liter capacity. •Trade Mark of the Driver-Harris Co., Res. U. S. Pat. Off.
GLAS-COL Electric H E A T I N G VOLUME
2 4,
NO.
10
» MAY
M A N T L E S 2 5,
1946
1443
