Scientific

reader service card for a current. ISCO catalog. If you're in a hurry, write direct or phone collect [402]. 464-0231. ISCO. BOX 5347. LINCOLN, NEBRASK...
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Scientific

L/C CATALOG FROM ISCO

VALUE

pH ELECTRODES ANALYZERS PLASTICWARE SAFETY PRODUCTS SPECTRO ACCY'S P L U M B I N G PARTS BALANCES MIXERS, BLENDERS AUDIO/VISUALS WATER TEST KITS TIMING DEVICES PORCELAINWARE SPECIALTY GLASSWARE TUBE RACKS COLORIMETERS The best brand names in the science supply industry are included among the more than 2,000 items in this catalog. Thousands have bought with complete confidence and satisfaction from Science Supply NEWS— now the full line is brought together for easy ordering in one carefully indexed volume, claimed by many to be the best budget balancing book in print!

i n s t r u m e n t s for h i g h and low pressure liquid chromatography and electrophoresis

You'll find 56 pages describing complete high performance liquid chromatographs, L/C components, and instruments for other separating techniques used in the research lab. Components include absorbance monitors with unsurpassed performance and many features unavailable elsewhere, high and low pressure pumps including models which w i l l reproduce any gradient program you'll ever need, large and small fraction collectors, and a digital electronic integrator specifically designed for L/C. Check the number below on your reader service card for a current ISCO catalog. If you're in a hurry, write direct or phone collect [402] 464-0231.

YOU'LL SAVE TIME AND MONEY WITH

MARKSON

SCIENCE I N C .

C A L L T O L L FREE (800) 854-2822 CIRCLE 368 ON READER SERVICE CARD LABORATORY GUIDE

ALTEX makes 496 HPLC fittings, O * prepacked columns and valves •

chemically inert



zero dead volume



compatible with other systems



immediate delivery

Altex makes the most complete line of high pressure liquid chromatography fittings, tubing, valves and pre-packed columns available today. They're all in stock right now at Altex or at a distributor near you — ready for immediate delivery. Contact us for complete information.

ISCO ALTEX

BOX 5347 LINCOLN, NEBRASKA 68505 PHONE (402) 464-0231 TELEX 48-6453 CIRCLE 414 ON READER SERVICE CARD

SCIENTIFIC, INC. 1450 Sixth Street / Berkeley, CA 94710 (415)525-5500 CIRCLE 203 ON READER SERVICE CARD AUGUST 1975 179 LG