INSTRUMENTS

have developed the Microflex product line to solve today's problems with fresh, new ideas. Call 609 692 8500 or write for complete information, specif...
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Microflex® Sample Prep Systems

Advantage Valves. New Designs, New Concepts ... Kontes Quality Designed for the efficient preparation of samples in the microliter to 5ml range for subsequent analysis by instrumentation. Microflex apparatus feature quick assembly and unitized designs that conserve valuable samples by minimizing travel paths, wetted surfaces, product catching joints or connectors, and sample transfers. These multi-purpose, unique designs are executed with outstanding craftsmanship to complement the increased sensitivity and smaller sample requirements of today's analytical instrumentation. Working from the tradition of innovation and quality that has established Kontes as the design leader in the scientific glassware industry, Kontes as the design engineers and leading researchers have developed the Microflex product line to solve today's problems with fresh, new ideas. Call 609-692-8500 or write for complete information, specifications, and prices. ®TM KONTES See u s at t h e P I T T S B U R G H C O N F E R E N C E , B o o t h s 315-19

KONTES

First there's the advantage of being inert, with teflon and Kel-F wetted surfaces. T h e n there's the advantage of choice. Four IN STAC® valves to choose from: Π AVCA (Air Activated) Valve. Pilot air activated for complete thermal and electrical isolation of fluid from system. Π EVCA (Electric) Valve. Provides direct acting solenoid (12 V D C & 24 VDC) operation. Π LAVA (Lever) Valve. For manual on/off control of corrosive fluids. Ideal for panel mounting with easy-to-use mount­ ing bracket. Eliminates bulky stopcock valves. Π N O V A (Needle Override) Valve. Uniquely designed panel mounted needle valve. Override feature allows operator to go to full open or closed without losing adjusted setting. The Advantage Valves are designed to interface with all INSTAC fittings and components. Their small internal volume (.25 cc), long life (10 million cycles), and 100 PSIG pressure capability make them ideal for most applications. For more advantages, call or write T h e Lee Company, 2 Pettipaug Road, Westbrook, C T 06498. (203) 399-6281.

Lee. Helping in small ways.

SCIENTIFIC GLASSWARE/INSTRUMENTS Vineland. NJ 08360

(609) 692-8500

Exclusive Distributors: KONTES OF ILLINOIS, E v a n s t o n , I l l i n o i s KONTES OF CALIFORNIA, San L e a n d r o . C a l i f o r n i a CIRCLE 132 ON READER SERVICE CARD 2 5 0 A · ANALYTICAL CHEMISTRY, VOL. 5 2 , NO. 2, FEBRUARY 1 9 8 0

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