among constant

ΏΖΤ.... .%m Fisher ISOTEMP BATH has all 6 features " "

1 . Precise temperature control — to better than ±0.005°C

2 . Temperatures readily reproduced

3 . 400-watt control heater and 800-watt auxiliary heater

4 . Unobstructed top for free and easy access to the Bath

5 . Wide range— - 5 to +107°C

6 . Very sensitive thermostatic ele­ment maintains the temperature exactly

Within the new Fisher Isotemp Bath the cooling coil (1), counter thrust impellers (2 and 3), sensitive control element (4) and heater coils (5)—are all contained in central housing (6) to provide ample working space and free access to the Bath.

Fisher Isotemp Until in n— <tn precise and coir < nit nl » Ι'/ΙΙΙΙΊ'ΙΙΙΙΙ nl viscosity tube <·' ill· Ι,ιιΙι l!< inn h and Develop/m nl In^nmloiu^.

The Fisher Isotemp Bath introduces a new concept of precision, constant-temperature baths to meet the requirements of modern laboratory practice. Every feature—from its '"coarse," "medium" and "f ine" temperature adjustments to its virtually shadowless illumination—is included to facilitate the instrument's convenient operation and its pre­cise control.

Write for a free booklet describing these and other features of the new Isotemp Bath.

The Fisher Isotemp Bath, available in two models for 115 and 230 voltages, is priced at $1,100.00 Headquarters for Laboratory Supplies

F I S H E R S C I E N T I F I C C O M P A N Y P I T T S B U R G H

717 Forbes (19) N E W Y O R K

6 3 5 Greenwich (14) W A S Η Ι Ν G Τ Ο Ν

7 7 2 2 Woodbu ry (Silver Spr ing, Md. )

S T . L O U I S 2 8 5 0 S. Jefferson (18)

M O N T R E A L

9 0 4 St. James