3ΓΜΕ
You qet more of the better things first from Inside projections permit inflow of air as buret drains
FOR EXAMPLE, BETTER
Tension fingers hold dust cap secure
Heavy reinforcing bead
Permanent scale .. . Ratio of I.D. to scale length controlled for optimum separation of subdivisions
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Better because . . . y o u can c h o o s e f r o m the w o r l d ' s m o s t c o m p l e t e range o f styles a n d sizes. Offered w i t h t i m e - p r o v e n Kimble TEFLON® Heavy seal, s t o p c o c k s . Plastic d u s t top and bottom . Tube sealed caps p r o v i d e d direct to barrel at n o extra cost. Mirror finish complements natural lubricity of TEFLON Finely ground Uniform, heavy and bevelled walls provide for high impact strength sturdiness Controlled onlice for correct delivery time and highest accuracy
OWENS-ILLINOIS
TEFLON® is a registered trademark of E. i. Du Pont de Nemours and Company, Inc.
maker of Kimbfc! rvu'lui Ι-S Toledo 1 Ο ι ι)
Circle No. 194 on Readers' Service Card
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SPEED
PUMP
Vernier Adjustment Insures Accuracy at Low Flows Various column chromatography metering operations are simplified by the use of a peristaltic type constant volume pump, such as the Sigmamotor Model T-8. A typical installation combines the Sigmamotor pump with solenoid actuated valves and timing equipment to deliver elutant buffers into ion exchange columns on a reproducible schedule. The T-8 pump is equipped with vernier for accurate flow adjustment.
SIMPLICITY i/a propipettes have no moving parts, hold liquid until released, accurate to 0.01 cc, fit all laboratory pipettes
SAFETY i/a propipettes eliminate unpleasant, dangerous mouth pipetting
PRICE $7.60 each
AVAILABLE IN FIVE COLORS FOR LABORATORY CODING black, red, green, yellow, blue IN STOCK AT YOUR LABORATORY DEALER
Single Sigmamotor units can be provided to handle 1, 2, 3, or 4 simultaneous pumping operations. Double units are available to handle 2, 4, 6, or 8 pumping operations at the same time. Capacities from .095 to 250 cc/minute are o b t a i n e d by t h e vernier adjustment. Complete information available on request.
sent on approval
information
INSTRUMENTATION
COLUMN CHROMATOGRAPHY with t h e S I G M A M O T O R
i/a propipettes used in one hand, technique easily mastered
W r ï r e tor additional
AUTOMATION IN
ASSOCIATES, I N C .
17 West 6 0 t h Street, New York 2 3 , N.Y
Circle 5 - 0 8 4 0
Circle No. 180 on Readers' Service Card
SIGMAMOTOR Inc. 47 N O R T H M A I N S T R E E T
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MIDDLEPORT. N E W YORK
Circle No. 98 on Readers' Service Card VOL. 3 6 , N O . 1 2 , NOVEMBER 1 9 6 4
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7 3A
