Join Up with fTlicro-Line, clear surgical tubing.
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• v e r s a t i l e · kink-resistant • resizeable · small-bore • 8 s i z e s : .010" t o .050" ID • clearer, m o r e p l i a b l e t h a n PE • l o n g e r shelf life t h a n PVC
ι Very large sample compartment Easy pushbutton operation Measures CD or PM Itage on same chart Photo (piezo) elastic modulator
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JASCO Model J-500 Spectropolarimeter measures circular dichroism from either 180 to 700 nm or 180 to 1000 nm with high resolution, extreme sensitivity and excellent, fast scan speed. Optional attachments make measurement and data processing extremely simple. MCD, Low Temperature, micro, LCD and Stopped flow accessories available.
Fabricate It to fit connectors or fittings; cold-stretch and thread it through needles or shrink it over them; form it into helixes or Ρ traps. Micro-Line can be custom-formed, tapered and connected to make a limitless variety of special appliances. It's easily fabricated into a coil to minimize tension on animals and pull-out. Implantable and ideal for injections, Micro-Line is softer and more economical than fluoroplastics, has less resistance to flow when bent to sharp angles. For brochure and prices, call or write:
Thermoplastic Scientifics, Inc. JASCO INCORPORATED 218 Bay S t r e e t E a s t o n , M a r y l a n d 21601 (301)822-1220 CIRCLE 89 ON READER SERVICE CARD
POWDER DIFFRZVGTIOINI
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Auto Analyzer Alternative ANALYSES · Nitrates · O r g a n i c Carbon · A m m o n i a · Cyanide • P h e n o l · S u l f a t e O f f e r i n g EPA Accepted Methodologies. ALPKEM provides the Laboratory w i t h t h e finest in R e m a n u f a c tured Instruments. W e offer a Total P a c k a g e o f Systems, T e c h nical Support a n d Accessories. Call us: ALPKEM C o r p o r a t i o n 503-657-3010 · 800-547-6275 P.O. B o x 1260 C l a c k a m a s , O R 9 7 0 1 5
an affiliate of Thermoplastic Processes. Inc. 57 Stirling Road, Warren, NJ 07060 · 800-526-7557 See us at our booth at the Pittsburgh Conference, Atlantic City, March 10-14 CIRCLE 202 ON READER SERVICE CARD
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STANDARD REFERENCE FOR POWDER DIFFRACTION ANALYSIS
1
SETS
19-20
POWDER DIFFRACTION FILE
BOOK FORM
CRYSTAL DATA VOLS 3&4
9
OVER 20,000 ENTRIES
For further information write: INTERNATIONAL CENTRE m FORDIFFRACTION DATA 1601 Park Lane, Swarthmore, Pa.19081 (215)328-9400 · Cable: JCPDS
*Τ.ΛΛ. Technicon Instrument Corp. CIRCLE 6 ON READER SERVICE CARD 164 A · ANALYTICAL CHEMISTRY, VOL. 52, NO. 2, FEBRUARY 1980
CIRCLE 133 ON READER SERVICE CARD
