LABORATORY SUPPLIES AND CHEMICALS 



209 



3477 3477(a) 



3477 MILLING MACHINE, Johnson's, for taking samples of irregular shaped 



steels, etc ; $35.00 



3477(a) MILLS, with pulley for power, grinding cereals, cocoa beans, vanilla 

 beans, white lead massage creams and for reducing other materials to 

 pasty consistency. The feeding cylinder is octagonal and permits the 

 feed shaft to grasp the material in the most effective way; all parts 

 are heavily tinned. Height, 24 inches; length, 12 inches. Pulley, 12x^4 

 inches. Requires 2 to 3 H. P. motor for 300 R. P. M 60.00 



3477 (b) MOISTURE APPARATUS, Brown- 

 Duvel's, adopted by the Bureau of Plant 

 Industry, U. S. Department of Agricul- 

 ture. These testers were developed pri- 

 marily to meet the needs of grain dealers 

 for a rapid and exact method of deter- 

 mining the moisture in corn. 



They are made in sizes for one, two, 

 four or six complete tests at one time, 

 and are equipped with either alcohol, gas 

 or electric heat. Compactness is a big 

 feature of this machine. 

 Two compartment, alcohol or gas 



burners $40.00 



Four compartment, alcohol or gas 



burners 55.00 



Six compartment, alcohol or gas 



burners 70.00 



Electrically heated at $8.00 per com- 

 partment, in addition to the above prices. 

 3477(b) (Specify 110 or 220 volts.) 



These prices include one gallon Testing Oil, one gallon Alcohol, Automatic Oil 

 Measuring and Grain Separating Devices, all necessary accessories, but do not include 

 scale. An accurate scale for weighing in grams is essential. Specify either Special 

 "Four-in-One" Scale or Harvard Trip Balance. (See Laboratory Scales.) 



Condensing tank on two-burner size machine will not be equipped for running 

 water unless specified. Prices subject to change without notice. 



SEPARATE PARTS 



Distillation flasks of glass . .$1.00 



Thermometers 2.00 



Graduated cylinders, cap. 25 c.c 75 



Condensing tubes 25 



Graduates for measuring oil, 150 c.c 75 



Wire gauzes 15 



Special rubber stoppers for distillation flasks. . 15 



