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Product Copsules currents, resistances and leakages. Standard Scientific Supply Corp., 808 Broadway, N. Y. 3, Ν. Υ. 42Α-2 Valves. Circle 69 A-1 for bulletin containing complete information on company's metering valves for precise control. 20 turns moves the stem only Vs"· In Vs" and 1/4" type sizes. Hoke, Inc., 137 S. Dean St., Englewood, N. J. 69A-1
y o u r b u y i n g guide t o t h e w o r l d ' s largest stocks of
ELECTRONIC SUPPLIES F O R INDUSTRY • • • •
R e c e i v i n g Tubes · Test Instruments P o w e r & Gas Tubes · Meters & Supplies Diodes & Transistors · A N Connectors Relays & Switches · M e t a l Chassis Bases • KNIGHT Public Address Systems
Simplify and speed your purchasing of electronic supplies and equipment at ALLIED. We make fast, expert shipment from the world's largest stocks of everything in Electronics. Manufacturers' prices available on quantity purchases. Send today for your FREE 1958 ALLIED Catalog—the complete Buying Guide to Electronic supplies for Industrial and Communications use. One Complete Dependable Source for f v e r y m m g in Electronics
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100 Ν . Western A v e . , Oept. 82-J7 Chicago 8 0 , Illinois our 37th year
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Voltage Stabilizers. Company's dc voltage stabilizers eliminate all storage batteries and storage battery accessories for spectrophotometers and general laboratory applications. Constant volt age ±0.01%. New York Laboratory Supply C o , Inc., 76 Varick St., Ν. Υ. 13, Ν. Υ. 65Α-3 Water Purification Equipment. The combination of water demineralizers, water still, and Barnstead M F filter, operated in series, will produce ten million ohms water in production quantities. Complete information available. Barnstead Still & Demineralizer C o , 34 Lanesville Terrace, Boston 31, Mass. 37A
Far further information, circle number 94 A-1 on Readers' Service Card, page 99 A
iVflV HEAVY DUTY SOLUTION BALANCE with ΗANDY WEIGHT RACK Another improvement on α fine b a l a n c e ! This h a n d y weight carrier rack puts the attachment weights within easy reach o f the o p e r a t o r . Bal ance is e q u i p p e d with stainless steel p l a t f o r m and beams. Has self-aligning bearings.
CHEMICALS AND MATERIALS Adsorbents. A hard, porous, white granular synthetic adsorbent, produced in a variety of mesh classifications, Florisil is cited as being used in the most difficult separations of organic compounds. Floridin Co, P. 0 . Box 989, Tallahassee, Fla. 81A Laboratory Chemicals. Circle indi cated numbers for complete information on the following Baker & Adamson laboratory chemicals: inorganic rea gents, 6A-1; "C.P." acids, 6A-2; radio chemicals, 6A-3; rare earths, 6A-4; organic chemicals, 6A-5; and biological stains and indicators, 6A-6. General Chemical D i v , Allied Chemical
