THE
BARBER COLMAN
BARBER-
News
COLMAM
Views and Techniques
Hydrocarbons C5 · C6 100 ft. Nylon capillary . 0 6 2 " O.D. χ .01 " I.D. Col. 3 0 X F.H. 200°C, Flame Ionization Detector Phase — Squilane, Current Range 1 χ 1 0 ' ° amps. Sample Split 100:1
Column 1 0 0 ft. SS capillary GE — 96 silicone 2 6 5 a C F.H. 3 7 5 ' C ,
Cell 250 C 6 0 psi Argon, Current Range 3 χ 1 0 B amps. 1 250 volts, Split 200 m l min
REPEATABILITY HERE IS NO ACCIDENT With Barber-Colman Gas Chromatographs, you can expect true repeatability: accurate, identical an alyses, time after time. There are good reasons for such accuracy. One of the major reasons is an exclusive linear sample inlet split ter— linear on two important counts: (1) splitting ratios are true; and (2) samples are not fractionated. Another reason is separate tem perature controls over column, splitter, and detector. Columns are held within 0.3°C. with saturable reactor heat input; stable, accurate variacs control input to sample inlet splitter and detector.
The most important reasons for accuracy stem from fine design, good engineering, and high quality production. Of course operator technique is important, too, but as the chromatograms above demon strate, the technique can be learned by any capable technician. Designed for flexibility, the Model 20 gives repeatability with radium, stronti um, or tritium as well as the hydro gen flame detector.
A. Estradiol. B. Estradiol—3 — Methylether. C. Androstenedione. D. Etiocholanolone Acetate. E. Progesterone. The excellent analysis shown above should be of special interest to the research people in the medical, bio chemical and biological fields. It was run on a B-C Model 20,
Barber-Colman pioneered Argon ionization systems in the United States — call on their most exten sive experience in gas chromatog raphy systems.
Barber-Colman Chromatographs played an integral part in the recent breakthrough on steroids which was reported in the July 25, I960 issue of C & Ε News»
STEROIDS
Barber-Colman Model 20
Application flexibility is outstanding with both Model 10 and Model 20. A complete line of accessories is available to adapt the basic instrument to special fields or needs. Hydrogen flame detector — argon ionization detection with radium, tritium, or strontium - 90 cells — use packed or capillary columns — linear sample inlet splitter — separate temperature controls for column, splitter and detector — network of sales and service offices·
BARBER-COLMAN COMPANY Industrial Instruments Division Dept. J, 15103 Rock Street, Rockford, Illinois, U.S.A. BARBER-COLMAN of CANADA, Ltd., Dept. J, Toronto & Montreal · Export Agent: Ad. Auriema, Inc., N.Y,
