7fatKM-announces the new. Model 25 Stainless Steel

WEBER OVEN

. . . a new design, offering the s a m e dependabil i ty, temperature uniformity and rugged construction a s former W e b e r m o d e l s in wor ldwide use for many years

NEW—Except the 40-year proven thermoregulator dependability

7802-G.

WEBER OVENS h a v e en joyed a wor ldwide r e p u t a t i o n for t he i r rugged c o n s t r u c t i o n a n d cons i s t en t d e p e n d ­ab i l i t y over m a n y y e a r s of c o n t i n u o u s se rv ice . N e w M o d e l 25 , w i t h r a n g e 60 t o 260°C , h a s a c h a m b e r 14 inches wide X 10 i nches deep X 12 inches h igh ( approx . 1 cu . f t . ) . C o n t r o l hous ing i s l oca t ed on t o p of t h e Oven , w i t h t e m p e r a t u r e s e t t i ng scale , t w o - h e a t s w i t c h a n d pi lot l a m p m o u n t e d on f ron t .

Stainless Steel Construct ion . Exterior of Stainless steel throughout; chamber walls also of Stainless steel. Temperature Scale for Direct Se t t ing . Pointer scale at top of Oven can be set directly a t the desired temperature . Thermoregulator . Of unique dependability, with a sensi­t ivi ty of ±1°C a t 200°C. Uniformity ±1 .5°C a t 100°C, i.e. maximum variation throughout working space relative to temperature a t location of thermometer bulb. Safety. Door latches release automatically to relieve acci­dental overpressure. Insulat ion . Of glass wool. Heaters. Molded refractory units containing nickel-chromium heating coils. Shelves . With upturned edges to keep load at a distance from the walls. For convenience in loading, they can be partially withdrawn without t ipping.

"J7ie heart of the Weber Oven is its sturdy,

sensitive, bimetallic thermoregulator . . ."

The bimetallic thermoregulator is of trouble-free construction, and has proved to be a most reliable means of temperature control. For more than 40 years, thermoregulators of this type have been used satis­factorily in Weber Ovens shipped all over the world. Electrical contacts are outside the Oven; a mechan­ical device overcomes objectionable strain, and a con­denser of adequate size minimizes sparking.

7802-G. OVEN, Thomas-Weber , Model 25. For operation from 60° to 260°C. Chamber 14 inches wide X 10 inches deep X 12 inches high. Overall dimensions 16-% inches wide X 18- Vs inches deep X 26- Vi inches high. Two-heat switch selects 300-watt or 800-watt heater inputs. With 300°C Thermometer in 1° divisions. For 115 volts, a.c 350.00 7802-H. Ditto, for 230 volts, a.c 350.00

Thomas

More detailed information sent upon request.

ARTHUR H. THOMAS COMPANY Scientific Apparatus and Reagents

VINE STREET AT 3 R D · P .O. BOX 7 7 9 Circle No. 101 on Readers' Service Card

• P H I L A D E L P H I A 5, PA., U.S.A.;

1 2 8 A · ANALYTICAL CHEMISTRY