42 A
ANALYTICAL
ALUMINA
CHEMISTRY
LOOKING FOR A POSITION?
MORTAR AND PESTLE Catalog No. 524
A New Design by COORS MADE OF ALUMINUM OXIDE
Executives . . . Chemists . . . Chemical Engineers . . . Managers . . . Teachers . . . Sales . . . Research
Available in a variety of sizes.
A n effective w a y to contact prospective e m ployers in the chemical process industries is open to you through the "Employment Information" columns of CHEMICAL A N D ENGINEERING NEWS.
• EASY TO GRIP • HARDNESS OF 9 (Moh's Scale!
• COMPLETELY VITRIFIEDAND NON-POROUS • POLISHED GRINDING SURFACES
CROSS SECTION: Showing rubber ring insei in base... The exclusive Non-Skid Feature which p r e v e n t s s l i p p i n g and olso prevents marring of furniture tops
Largest circulation of all magazines in the field; broadest industrial coverage—the weekly news magazine of the chemical w o r l d — a n d with l o w cost for your announcements. Send for rate schedule and a copy of "Here's Help."
CHEMICAL AND SCIENTIFIC PORCELAIN WARE
CHEMICAL AND ENGINEERING NEWS COORS U.S.Α.
Employment
Recognized.
Internationally
for Quality
Information
3 3 2 West 42nd St.
N e w York 18, Ν . Υ.
COORS PORCELAIN COMPANY COLDEN, COLORADO
WHAT'S "UNDER THE COVER" OF "LABCONCO" KJELDAHL? "Labconco" Kjeldahl apparatus has a lot of exclusive features for safety, speed and durability. The com pleteness of the electrical equipment is an example of this "built-in" high quality. Constant improvement in design, and the constant addition of extra features have made "Labconco" Kjeldahl the leader in this field. 1 and 2—Branch circuit panels with front removed. New " push-matics" provide automatic tripping under overload or short circuit. A flip of the finger resets them. This new safety feature is another Labconco "first!" 3—Magnetic contactor, operated from digestion timer (5). Just set the timer and go about your work—your digestions automati cally cut off at the proper moment! 4—Magnetic contactor, operated from pushbutton station (6). Just push a button—off goes all cur rent to your distillation a p p a r a tus. Another "Labconco" safety feature! Write t o d a y — t o the Kjeldahl p e o p l e — f o r pictures, prices, users and complete details!
12 capacity digestion and dis tillation unit with 3 heat con trol and thermo-water control for distillation. One of many sizes and models available.
L A B O R A T O R Y C O N S T R U C T I O N CO. 1115
Holmes St.
Kansas City, M o .
