Pierce Regroovenators Keep Swagelok® Threads Smooth and Free Running
NEW CHEMICALS Gas chromatographic and spectroscopic standards of liquid and solvated solids are available in serum bottles sealed with Microsep-F-190 closures. These standards are designed for direct syringe access through a Teflon lined, self-sealing septum, stored under an inert atmosphere. Theta Corp. 215853-2050 501 Concanavalin A, a protein, is useful in the characterization and fractionation of carbohydrates and proteins and has many applications in immunology. It can be given spectral, radioactive, or paramagnetic labels without loss of its specific interaction properties. Polysciences, Inc. 215-343-6484 502 SP-2401 fluorosilicone, an improved version of QF-1 and OV-210 stationary phases used in gas chromatography, has the same selectivity as the older phases but shows much better thermal stability below 275°C. The material is particularly useful for high-sensitivity detection systems such as electron cap ture and mass spectroscopy. Supelco, Inc. 814-359-2732 503
Just run a R E G R O O V E N A T O R d o w n that f i t t i n g and realign those balky threads. Excellent for close quar ters, y o u only need % inch clearance f r o m center of f i t t i n g ! Knurled for positive grip.
R E G R O O V E N A T O R S are supplied in four die sizes to f i t Swagelok Series 100, 200, 300 and 400 fittings (for 1/16", 1/8", 3 / 1 6 " and 1/4" tubing, respectively). REGROOVENATOR '100' fits Swagelok series 100, etc. Regroovenator is a trademark Chemical Company.
of
11190
REGROOVENATOR Ί 0 0 '
$12/ea
11195
REGROOVENATOR '200'
$12/ea
11199
R E G R O O V E N A T O R '300'
$12/ea
11200
REGROOVENATOR '400'
$12/ea
Pierce
cs
PIERCE CHEMICAL COMPANY
P.O. Box 117 Rockford, Illinois 61105 U.S.A. PHONE 815/966-0747 TWX 910-631-3419 7
CIRCLE 1 4 8 O N READER SERVICE CARD
Anion-exchange resin DA-X4 accelerates the separation of carbohydrate mixtures by liquid chromatography to 2^2 hr. The resins are spherical beads with a diameter of 20 ± 5 muerons. Their anion-exchange properties are obtained by attaching quaternary ammonium groups to 4 % crosslinked polystyrene divinylbenzene. $700/50 grams; $375/25 grams. Durrum Chemical Corp. 415-321-6302 504 Laboratory reagents for use in micro biology, immunology, enzymology, chro matography, and serology are furnished at molarities or solute percentages al lowing for immediate use for individual lab "combinations." Items are pack aged in reusable polyethylene cubitain ers provided with a faucet (spout) elim inating the need for tipping, syphons, or aspirators. Also available are antisera and standardized buffer solutions. ICN Chemical & Radioisotope Division. 714-833-2500 505 Carbon and graphite powders for use in spectroscopy and metallurgy have an isotropic particle structure, intercon nected porosity within each particle, and wide selection of particle sizes ranging from less than 10 microns to 10 mesh. All of the 13 standard grades can be purified to contain less than 5 ppm residual ash. Poco Graphite. 817-627-2121 506
GLASS FABRICATORS OF GLASS COMPONENT PARTS FOR ORIGINAL EQUIPMENT MFGRS. offers the following capabilities: • Master craftsmen in g/ass, quartz fabrications • Prototype development of electronic glass envelopes for production • Glass to metal seals • Gas Chromotography columns • High Vacuum glassware • Giass High Vacuum Systems • Laboratory apparatus and glass specialties With our facilities and personnel we are equipped to handle all types of glass component parts from prototype stage to production runs. We feel that our vast experience enables us to offer you assistance on engi neering problems in relation to manufacturing design, practicality, and econ omy.
FUSION,
INC.
FUSION 9681 ALLEN AVE. INC. ROSEMONT, ILL. 60018 CIRCLE 65 ON READER SERVICE CARD A N A L Y T I C A L CHEMISTRY, VOL. 4 4 , NO. 3 , MARCH 1 9 7 2
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