28 A
ANALYTICAL
CHEMISTRY
INTERNATIONAL Bottle Shaking
Machines
Constructed for large capacities φ Adaptable to c o n tainers of various sizes and shapes φ Variable speed from 100 to 600 R.P.M. · Effective dual m o t i o n φ Large motor w i t h friction drive φ Massive base for greater stability. Size 2 Shaker with 10-place head a d a p ted for 500-1000 m l . bottles a n d p i n t a n d q u a r t s size o r dinaryjfruit j a r s .
'PRECISION
WATER STILLS are economical and efficient because they are engin eered to suit your individual needs. Y o u , too can lower costs with a "Precision" W a t e r Still installation. • All "Precision" Water Stills are hard water models at no extra cost. • Large diameter tall vapor domes, with built-in baffles provide low vapor velocity—prevent entrainment—improve quality of water. • Constructed throughout of heavy tin coated copper. • Plate c o n d e n s e r s , no coils to "lime", leak or clog. • Sizes to 2 5 0 gallons per hour. Steam Heat. • Automatic controls available. • Minimum operating costs.
A motion is produced similar to shaking by hand, but much more rapid and effective. It is not only reciprocating up and down, but also elliptical and produces within the container a circulation as well as concussion of the fluid. More compact construction is obtained by employing a satisfac tory friction drive in place of the conventional belt drive. International Bottle Shaking Machines can also be furnished with an explosion proof motor for haz ardous locations or when volatile materials are being used. The Size 2 Shaker can be furnished with a variety of heads. Send for Bulletin S for complete description.
• Other models in gas and electric heat. Get the Facts Write for literature 6 - 9 2 5
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INTERNATIONAL LABORATORY CHEMICAL CENTRIFUGE
For purely scientific or pre liminary to large scale com mercial operations this centri fuge is found useful in the sepa ration or dehydration of crys tals, pulps or other materials. It can be operated continuously and has adjustable speeds up to 4000 r.p.m. with one size of head, 5" dia. χ 21// deep, furnished in manganese bronze, stainless steel, Monel metal, rubber covered—also Coors por celain. Send for Bulletin CH for complete description.
TAYLOR COMPARATORS FOR ACCURATE—LOW COST pH, Chlorine, Phosphate Determinations A Taylor Comparator, molded from plastic, is light, compact and durable. It is readily portable for important on-thespot determinations of pH, Chlorine, etc. So simple to operate any one can make determinations in a matter of seconds. Low cost makes it practical to have several Taylor Comparators available. All Taylor Liquid Color Standards carry an unlimited guarantee against fading. Nine color standards (a complete set for each indicator) are sealed in one slide, so there are no single standards to handle.
Valuable FREE book
There is an International for any job
Valuable d a t a for all m e n c o n c e r n e d w i t h test ing process liquids, boiler w a t e r , e t c . . . . ex plains t h e o r y a n d p r a c t i c e . . describes T a y l o r sets for specific uses. W r i t e for y o u r free_copy t o d a y . See y o u r dealer for e q u i p m e n t .
INTERNATIONAL EQUIPMENT CO. 1284 Soldiers Field Rd.
Boston 35, Mass.
Makers of Fine Centrifuges
W . A. TAYLOR AcS° 7.S02 YORK RD. · EAL":M.ORfi-4, MD.
