(21) Yang, F.-S.; Caldwell, K. D.; Myers, M. Ν.; Giddings, J. C. J. Colloid Interface Sci. 1983,92, 81. (22) Jones, H. K.; Phelan, K.; Myers, M. N.; Giddings, J. C. J. Colloid Interface Sci. 1987,120,140. (23) Thompson, G. H.; Myers, M. N.; Gid dings, J. C. Anal. Chem. 1969,41, 1219. (24) Kirkland, J. J.; Yau, W. W. J. Chromatogr. 1986, 353, 95. (25) Brimhall, S. L.; Myers, M. N.; Cald well, K. D.; Giddings, J. C. Sep. Sci. and Tech. 1981,16, 671. (26) Schimpf, M. E.; Giddings, J. C. Macromolecules 1987,20,1561. (27) Gunderson, J. J.; Giddings, J. C. Anal. Chim. Acta 1986,189,1. (28) Gunderson, J. J.; Giddings, J. C. Macromolecules 1986,19, 2618. (29) Schimpf, M. E.; Myers, M. N.; Gid dings, J. C. J. Appl. Polym. Sci. 1987, 33, 117. (30) Schimpf, M. E.; Williams, P. S.; Gid dings, J. C. Appl. Polym. Sci., in press. (31) Yau, W. W.; Kirkland, J. J.; Bly, D. D. Modern Size-Exclusion Liquid Chroma tography; John Wiley & Sons: New York, 1979; Chapter 7. (32) Gao, Y. S.; Caldwell, K. D.; Myers, M. N.; Giddings, J. C. Macromolecules 1985,18,1272. (33) Brimhall, S. L.; Myers, M. N.; Cald well, K. D.; Giddings, J. C. J. Polymer Sci 1984 22 339 (34) Wahlùnd,' K.-G.; Giddings, J. C. Anal. Chem. 1987,59,1332. (35) Caldwell, K. D.; Kesner, L. F.; Myers, M. N.; Giddings, J. C. Science 1972, 176, 296. (36) Davis, J. M.; Fan, F.-R.F.; Bard, A. J. Anal. Chem. 1987,59,1339. (37) Koch, T.; Giddings, J. C. Anal. Chem. 1986,58,997. (38) Chen, X.; Wahlund, K.-G.; Giddings, J. C. Anal. Chem. 1988,60, 367.
Prevent Accidental Mixing of Hazardous Fluids SWAGELOK "Keyed" Quick-Connects provide safe connection of lines in multi-fluid systems SWAGELOK "Keyed" Quick-Connects feature a positive mechanical lockout system which prevents accidental intermixing of different lines.
MATCHED "KEYS"
UNMATCHED "KEYS"
Allow flow and proper coupling
Allow no flow and prevent coupling
Only stems and bodies of the same key will couple. Stems and bodies are color coded and numbered for easy identification. Both, the "Keyed QC & QT" Series Quick-Connects offer single or double end shut-off with a choice of SWAGELOK Tube Fittings, male & female NPT and 37° AN flare end connections.
"Keyed QC" Series
Karin D. Caldwell received her Ph.D. (Fil. Lie.) degree in biochemistry from the University of Uppsala, Sweden, under the supervision of Jerker Porath. Four years of postdoctoral work with Cal Giddings at the University of Utah introduced her to field-flow fractionation. After obtaining the degree of Filosofie Doktor on the subject of enzyme immobilization based on hydrophobic interaction, she returned to Giddings's laboratory to apply FFF to biological separation problems. In 1985 she accepted a position as research associate professor of bioengineering and assumed the directorship of the Center for Biopolymers at Interfaces. She is actively involved in hiking and ski mountaineering. In addition, she is the president of the Swedish Heritage Society of Utah and holds board positions in the Wasatch Mountain Club and the Utah Symphony Guild.
• Eight "Keys" • Available in 316SS with Viton O-Rings or brass with BunaO-Rings — other O-Ring materials available on request. • Service ratings from vacuum to 3000 psi and 400°F • 1/8" to 1/2" and 6mm to 12mm size end connections
"Keyed QT" Series m Four "Keys" • All 316SS construction with TFE seals for exceptional corrosion resistance • Service ratings from vacuum to 6000 psi and 400°F • Minimum air inclusion and spillage • 1/8" to 1" and 12mm size end connections • Safety release button to prevent accidental uncoupling Available through your local Authorized SWAGELOK Sales & Service Representative
Swagelok® QUICK-CONNECTS SWAGELOK Co., Solon, Ohio 44139 SWAGELOK Canada, Ltd., Ontario & 1985 5WAGEL0KCo.. all rtghlsreserved C-73ta VITON-TM OuPoil
CIRCLE 152 ON READER SERVICE CARD ANALYTICAL CHEMISTRY, VOL. 60, NO. 17, SEPTEMBER 1, 1988 · 971 A
