> *
Solvent Delivery P u m p s for
^r^ Liquid Chromatography
ULTRAPURE chemicals
When you simply can't tolerate impurities or uncertainties in your reagents REDUCE ANALYSIS T11VIE 15 TO 2 0 FOLD OVER HYDROSTATIC PRESSURE METHODS! • • • • • • • • •
FULL FLOW RANGE FROM 0 TO 1164 ML/HOUR. ACCURATE AT PRESSURES TO 100 P.S./.G. REPEAT YOUR FLOW SETTINGS TO WITHIN 0.1%. DRIFT-FREE ACCURACY FOR LONG RUNS. REVERSIBLE WHILE RUNN/NG FOR QUICK COLUMN BACK FLUSH AND REGENERATION. SOLVENTS ONLY CONTACT HARD ALUMINA CERAMIC AND T.F.E. ABRASION-RESISTANT CERAMIC PISTON AND CYLINDER LINER. QUIET SYNCHRONOUS STEPPER MOTOR DRIVE. SMALL: ONLY 10.7" X 5" X 3.2" WIDE AND 8 POUNDS LIGHT.
• INEXPENSIVE:
«RPSY-ICSC F.M.I. LAB PUMP *R428 MICROMETER KIT *R479 VA-28 T.F.E. PORT ADAPTERS
Whenever your requirements for purity and product definition are stringent, ULTREX ultrapures can indeed insure against loss of time, effort, and other expenses. Consider ULTREX when you just can't afford to gamble with impurities or uncertainties.
ULTREX ®
$450.00 $ 40.00 NO CHARGE
COMPLETE F.O.B. PRICE $490.00 NOTE: FOR EXPLOSION PROOF DRIVE, SPECIFY RPSYX-1CSC, R428, AND R479 ONLY $630.00
FLUID
Over 100 of the purest reagents and chemicals available anywhere in the world. Every product is accompanied by a detailed Certificate of Analysis of the actual lot supplied. In terms of spectrochemically detectable impurities, ULTREX products are typically 99.995% to 99.99995% pure. And the extremely low content of all impurities (often at the parts per billion level) satisfies the most rigid use requirements.
METERING.INC.
P.O. BOX 507, OYSTER BAY. N.Y. 11771 · (516) 922-6050
Write for n e w ULTREX ultrapure Reagent brochure.
J. T. Baker Chemical Co. Phillipsburg, N.J. 08865 201 859-5411
J.T.Baker CHEMICALS
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The AutoAnalyzer* is the standard
SEE THE LIGHT! The Romanor HG-2S double monochromaror Ramon system offers the greatest throughput in the industry, the simplest optical design a n d the largest, most accessible sample chamber. The Ramanor a n d its full line of accessories ensures dramatic results. Call or write for more information o n the most advanced Raman system in the world at Instruments SA, Inc. Instruments SA, Inc.. J-Y Optical Systems Division, 173 Essex Avenue, Metuchen, N.J. 0Ô840. ( 2 0 1 ) 4 9 4 - 8 6 6 0 , Telex 8 4 4 - 5 1 6 . In Europe, Jobin Yvon, Division d'Instruments SA. 16018 Rue d u Canal. 9 1 1 6 0 L o n g j u m e a u , France, Tel. 9 0 9 . 3 4 . 9 3 Telex JODYVON 8 4 2 - 6 9 2 8 8 2 .
JOBIN YVON
Instruments SA, Inc. J-Y Optical Systems Division
and
ALPKEM
rebuilds the standard. * * *
Rebuilt AutoAnalyzer instruments Full line of accessories & supplies Applications Engineering
ALPKEMM Corporation 1234 S.E. Union Ave., Portland, OR 97214
503 - 233-3626 or 800 - 547-5535 *Trademark Technicon Corp. CIRCLE 1 0 8 O N READER SERVICE
CARD
554 A · ANALYTICAL CHEMISTRY, VOL. 50, NO. 6, MAY 1978
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