Mix & Dispense Two Gases to ±0.05% Accuracy with the
CALI-GAS MIXING PUMP, Ideal for • Instrumentation Standardization «Critical Mixing Requirements • Metering Gases • Gas Standards Two pistons, timed to each other, enables the i/a Cali-Gas Mixing Pump to combine and dispense two pure gases to highly accurate calibration ranges. Complete with two pumps, bronze gears, oil bath housing and plastic case — $ 7 7 5 .
For Complete
Information,
AMINO ACIDS AND SERUM PROTEINS
Write:
ADVANCES IN CHEMISTRY SERIES 44
INSTRUMENTATION ASSOCIATES, INC. 17 West 60th St. New York, N.Y. 10023 (212) CI 5-0840
Scientific Instruments for Medicine & Industry See us at Booth 605 Circle No. 7 on Readers' Service Card
INTEGRATE PREVIOUSLY RECORDED VARIABLES
Quickly and. Easily with the
A M I N O ACIDS AND SERUM PROTEINS is based on t h e Richard J . Block Memorial S y m p o s i u m , organized by t h e
Knob for ' positioning Five digit index to
counter for output.
Perhaps more individuals are concerned with a m i n o acid and protein research t h a n any other area of bio chemistry, not only f r o m the s t a n d p o i n t of nutrition a n d nutritional and physiological effects, but t h e growing evidence of a possible link to t h e genetic code.
Division of Biological Chemistry of the American Chemical Society.
follow curve.
The 10 papers by 20 contributors reflect work at
t h e frontier of t o d a y ' s research activity in amino acids a n d protein chemistry.
ROYSON Planimeter
In the o p e n i n g paper
Julius
Schultz discusses the nature and origin of serum proteins a n d suggests t h a t continuous
systems
undifferentiated rather
than
proteins discrete
may
be
molecular
species. [Counter Reset Knob.
Size: 8 " χ 1 5 " χ 4 ' / , " (for 4 " charts)
Foof Rheosfat
Other papers on biosynthesis examine the role of t h e liver in t h e biosynthesis of plasma proteins, aminoacyl
Tracing arm
transfer in ribosomes, a n d t h e role of phosphates in • for linear or square root charts—easily convertible from, one to the other • accurate within 1 % or better, even on short sections • controllable chart feed speed using a foot operated rheostat • portable, easy to operate on 110 volt AC current. The R0YS0N Planimeter provides a simple means for integrating strip chart records. It enables quick, easy integration of variables that have already been recorded and is widely used for charts of all widths as well as for integrating flow on the narrow strip charts of pneumatic control systems. Send a sample of your chart for a quotation and additional data or, call for complete details.
ROYSON ENGINEERING Hatboro,
Pennsylvania
·
Phone:
(215)
COMPANY OSborne
Circle No. 63 on Readers' Service Card
122 A
ANALYTICAL CHEMISTRY
5-2800
the du
urea cycle. Vigneaud
human
A paper by Nobel Laureate Vincent
reports t h e fate of cystathionine
in a
cystinuric.
154 Pages, cloth bound $5.50 postpaid in U. S. and Canada; 20 cents foreign and PUAS
Order from: Special Issues Sales/American Chemical Society 1155 Sixteenth St., N. W./Washington, D. C. 20030
plus
