ANALYTICAL
INSTRUMENTS. INC.. presents A watched pair of versatile, high precision instruments
Science House, Inc. Box 7 9 1 3 , Pittsburgh 16, Pa. Spectra Bind Associates 1323 Carroll St., Brooklyn 13, Ν . Υ . Tennessee Industrial & Analytical Laboratory P.O. Box 7 0 0 1 , Knoxville, Tenn. Thermco Laboratories Johnson Road, Michigan City, Ind. Volk Radiochemical Co. 5 4 1 2 N o . Clark St., Chicago 4 0 , III. Weber Showcase & Fixture Corp. 5 7 0 0 A v a l o n Blvd., Los Angeles, Calif. Western Scientific Apparatus 1 7 4 0 University A v e . , Berkeley, Calif. Wilkens-Anderson Co. 4 5 2 5 W . Division St., Chicago, III. Wisconsin A l u m n i Research Foundation P.O. Box 2 0 5 9 , Madison 1 , Wis.
INDEX TO ADVERTISERS A POTENTIOSTAT and A CURRENT INTEGRATOR For all analytical and synthetic applications of controlled potential electrolysis and coulometry at controlled potential. Available separately for other purposes also. ANALYTICAL INSTRUMENTS, I N C . R.F.D. N o . 2 Bristol, Conn. For further information, circle numbers 6 2 A - 1 , 62 A-2 on Readers' Service Card, page 63 A
NALGON PLASTIC
FLEXIBLE TUBING
SQUARE K N O T S are not among the important re quirements of a good plastic tubing, but perfect flexi bility is. Nalgon has proven its flexibility in many out standing laboratories . . . along with •
COMPLETE NEUTRALITY · HIGH CHEMICAL RESISTANCE
•
ABSOLUTE SAFETY ·
•
TRUE TRANSPARENCY ·
EXCELLENT DIMENSIONAL STABILITY RESISTANCE TO AGE-YELLOWING
. . . and it's ECONOMICAL! You'll find many higher priced plastic tubings, but you will not find a better one, at any price, than N A L G O N .
Ai your Laboratory Dealer
or Write
Supply
TheNALGE CO., Inc.
NALGE
ROCHESTER 2. Ν. For further information, circle number 62 A-3 on Readers' Service Card, page 63 A
62 A
Y.
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