New Series 



Vol. XLVI. No. 1181 



Fkiday, August 17, 1917 



Single Copies, 15 Cts. 

 Annual Sdescription. S5.00 



Freas Electric Ovens 



The recognized standards and used in the leading laboratories 

 of this and other countries. The No. 100, 12"xl2"xl2" is the 

 most popular size, but the larger sizes are also in great de- 

 mand up to the No. 140 which is the largest regular size, be- 

 ing 32''xl8"x24". The regular ovens are intended for tem- 

 peratures up to 1S0°C. The special High Temp ovens, how- 

 ever, are intended for temperatures up to 260°C. The High 

 Temp ovens are used especially for asphalt and oil tests, also 

 for baking tests and in general wherever a known uniform 

 high temperature is required. The regular ovens are used 

 for a great variety of moisture tests. For organic tests es- 

 pecially in connection with foods, colloids, etc., the Freas 

 Vacuum oven is ordinarily employed. All of these ovens 

 maintain uniform temperatures to within a degree. 



No expense is spared in construction, the aim being to 

 make the ovens as nearly perfect as possible. 

 The ovens are so thoroughly insulated that losses of heat 

 by radiation are almost entirely eliminated. For this 

 reason these ovens require only about one half as much 

 current as is required by other styles of ovens. The rela- 

 tively small amount of current required implies corres- 

 pondingly less strain on the wiring, less danger of spark- 

 ing, and in general longer and more satisfactory service. 



TV rite for descriptive bulletin and prices. 



In ordering specify voltage of current. 



EIMER & AMEND 



Founded 1851 



Third Ave., 18th to 1 9th Sts. NEW YORK CITY 



Branch Oftices and Showrooms 

 2011 Jenkins Arcade, Pittsburgh, Pa. 48 Sparks Street, Ottawa, Canada 



