28.086
14 Si Petrarch for organosilicon specialties
Silanes for bonded phases Octyl, octadecyl, amino, cyano and perfluoroalkyl silanes are available from Petrarch for use in preparation of permanently bonded phases for HPLC. We also undertake custom syntheses of non-catalog items for your specific requirements. Send for your information packed, 110 page catalog today— it's free.
EASIER DOES IT! It's e a s i e r t o m a k e KBr p e l l e t s with our n e w Handi-Press. No need to bother with a separate press Our die and press are combined in one hand-held unit that weighs only 2V2 pounds. Interchangeable die inserts make it a quick cinch to match the amount of your material with the best pellet size for good spectra. Simply turn the die chamber for the right die pressure for standard 7 mm, 3 mm or 1 mm pellets. Eliminate water bands just by attaching your vacuum p u m p to the optional vacuum chamber head. U n e x p e c t e d s a v i n g s . Compare the high prices of other KBr pelletmaking devices with the far lower cost of our Handi-Press. The savings could surprise you — very pleasantly. Whenever you have an IR problem, call the 1R accessories specialist: Barnes Analytical. Easier-does-it in more ways than you might think.
BARNES
Barnes Analytical Division, Spectra-Tech, Inc. 652 Glenbrook Road, Stamford, Connecticut 06906 Phone toll-free 800-243-9186. In Connecticut, 203-357-7055. CIRCLE 27 ON READER SERVICE CARD
GOW-MAC GAS LEAK DETECTORS Maximum Response at Modest Prices
• • • •
DEPENDABLE SENSITIVE VERSATILE EFFICIENT
GOW-MAC Gas Leak Detectors can ferret out leaks in heated or ambient gas pressurized systems that the usual soap bubble method cannot reach or detect GOW-MAC Gas Leak Detectors are a must in any plant or laboratory where potential leaks occur. CAN Y O U A F F O R D NOT TO HAVE ONE? GOW-MAC MAKES IT A F F O R D A B L E ! USE THE READER I N F O R M A T I O N NUMBER FOR OUR I N F O R M A T I V E BROCHURE.
PETRARCH SYSTEMS, INC. Bartram Road Bristol, PA 19007 215:781-9255 In the Far East: Chisso Corp., Tokyo.
GOW-MAC INSTRUMENT CO. P.O. Box 32, Bound Brook, NJ 08825 Telephone: (201) 560-0600
PET8A
CIRCLE 175 ON READER SERVICE CARD
CIRCLE 91 ON READER SERVICE CARD
ANALYTICAL CHEMISTRY, VOL. 53, NO. 9, AUGUST 1981 · 1073 A
