Chromosorb* W-H.P The uniform, inert and superior support for biomedical GLC. Λ
SEPARATION OF f E BARBITURATES
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SEPARATION OF STEROIDS
SEPARATION OF ESTROGENS
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4 Minutes
3 % SP-1000 on C H R O M O S O R B W-H.P. 1 0 0 / 1 2 0 mesh, 3 ft.x2mm, I.D. glass column, 2 6 5 ° C , 40 m l / m i n . Helium. A. BARBITOL Β. ΗEXOBARBITOL D. MEPHOBARBITOL C. AMOBARBITOL E. SECOBARBITOL
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3 % U.C.-W 9 8 2 o n C H R O M O S O R B W-H.P., 1 0 0 / 1 2 0 mesh, 6 ft.x4mm. I.D. glass " U " tube, 2 5 0 ° C , 50 m l / m i n . Helium flow. A. A N D R O S T A N E B. A N D R O S T A N 17-one C. 5 a C H O L E S T A N E
Chromosorb W-H.P. is an acid-washed and silane-treated flux-calcined diatomite support for pharmaceutical/medical/toxicological analyses. Its features include superior inertness and separation efficiency, no catalytic surface activity, short columnconditioning time, product uniformity from batch to batch, and prompt delivery. Mesh sizes available: 60/80, 80/100 and 100/120. For more specific information, write for our revised bulletin FF-192.
D. C H O L E S T E R O L E. S T I G M A S T E R O L
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3 % OV-210 on CHROMOSORB W-H.P., 8 0 / 1 0 0 mesh, 6 ft.x3mm, I.D. glass " U " tube, 60 m l / m i n . Nitrogen flow. FID. 2 5 0 ° C A. ESTRADIOL TMS B. ESTRIOL TMS C. ESTRONE TMS
Johns-Manville, Box 1960, Trenton, N.J. Also available in Canada and overseas. Cable: Johnmanvil.
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Johns-Manville
Chromosorb is a Johns-Manville registered trademark for its brand of prod ucts developed as support material or absorbents for gas chromotography.
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4 Minutes
ANALYTICAL CHEMISTRY, VOL. 43, NO. 2, FEBRUARY 1971
