EM SCIENCE

Circle # 40. Circle it 41. Circle # 42. Circle a 43. Circle # 44. Circle It 45 ems-sos. Turn to EM Science for the best performance, value,and innovat...
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Innovative chromatography products that provide high performance and exceptional value. From EM Science: • Guaranteed-performance HPLC columns • TLC, HPTLC plates • HPLC instruments • Silica gel sorbents • Sample preparation systems • Specialty HPLC columns: Polymeric, chiral, & biochrom

Turn to EM Science for the best performance, value, and innovation in chromatography products. All EM Science chromatography products provide reproducibility you can depend on . . . and the economy you'll appreciate.

E M SCIENCE A Division of EM Industries, Inc.

P.O. Box 70 480 Democrat Road Gibbstown, NJ 08027 (609) 354-9200 (800) 222-0342 Associate of E. Merck, Darmstadt, Germany

Find out what's new in innovative chromatography products. Call or write today for this new, FREE bulletin.

© 1989 EM Science

We have service down to a science. HPLC Columns Circle #40

TLC Circle # 41

HPLC Instruments Circle it 42

Sorbents Circle # 43

Sample Prep Circle # 44

Specialty HPl£ Columns Circle # 45

EMS-BOS

See us at Pitcon booth 4533-4542. ANALYTICAL CHEMISTRY, VOL. 61, NO. 3, FEBRUARY 1, 1989 · 197 A