VOLUME
32 A
19, N O .
12
ELECTROLYTIC APPARATUS
SURFACE EVAPORATOR UNIT è ® #.
t i l V # © .-.% ^
With Amersil's* indirect fused silica heater, lighter distillates are evaporated with greater accuracy than with a Bunsen burner or other source of heat below the evaporator dish.
• Makes possible the surface evaporation of corrosive chemicals w i t h o u t deterioration of the heater element.
RAPID AND ACCURATE DETERMINATION OF METALS Electrolytic analysis of metallurgical samples demands highly accurate, yet easy to operate apparatus. The Braun Model PC Electrolytic Apparatus, designed to meet every requirement for the most exacting technical analysis, meets every need for either routine or critical research work. Uniform determinations of copper, lead, antimony, cadmium, nickel, tin, zinc and other metals can be made quickly, permitting continuous routine analysis with minimum expenditure of time and labor. All units operate independently of each other so that as many as six individual analyses may be made simultaneously on one 6-unit outfit. These outfits, available in 2, 4 and 6-unit assemblies, constitute the ideal equipment for busy laboratories. For complete information address Dept. A-12.
B R AU N C O R P O R A T I O N
2260 East Fifteenth Street - s ^ t f c ^ Los Angeles. California Braun-Knechl-Heimann-Co, "^^j]ί|à*i~^^ Scientific Supplies Co.
• Heat or rate of evaporation and temperature can be electrically controlled less expensively by increasing the g a p between t h e surface heater a n d t h e evaporating dish. • Available in a variety of wattages and shapes. • Functions efficiently as an electrical h o t plate for b o t t o m heating of flasks and other vessels.
Write Amersil.Department'T'for more complete information or ask for latest printed matter.
AMERSIL
COMPANY I n c . 'ENGELHARDI
CHESTNUT AVENUE
HILLSIDE 5, N. J.
LUMETRON Photoelectric COLORIMETER and FLUORESCENCE METER A high precision instrument of unusual flexibility for all tests involving . . . TRANSMISSION FLUORESCENCE TURBIDITY U. V. ABSORPTION
Mod. 402EF for determination of Vit. Bj a n d Β
Also Colorimeters Densitometers Reflection Meters Smoke Meters Glossmeters Vitamin A Meters Continuous-Flow Colorimeters Write for
Literature
PHOTOVOLT 9 5 Madison A v e .
Prompt
Delivery
CORP. New York 1 6 , N . Y.
