40A
ANALYTICAL
CHEMISTRY
FOR EXACTING TECHNICAL APPLICATIONS VITREOSIL* (vitreous silica) tubing
possesses
many
characteristics you seek. A few of its properties a r e : Chemical and catalytic
precisely measure gas pressures in
inertness. Usefulness up to 1000°C and under ex treme thermal
shock.
Homogeneity a n d free
the MICRON RANGE
dom from metallic impuri ties. Unusual e l e c t r i c a l
Even without knowing the composition of a gas you can accurately measure its pressure in the 0-150 micron range by using the Consolidated Model 23-105 Micromanometer. Pressure changes of a fraction of a micron can now be determined. Using the Consolidated Micromanometer, gas composition becomes unimportant. Pressure readings are entirely inde pendent of the fact that gas might be air, a condensable vapor, or an unknown mixture. Because of this, special calibration charts for each gas are eliminated. Model 23-105 is ideal for measuring static pressures in high vacuum stills and crystallizers; or for measuring the pressure of gases of unknown or variable composition. The instrument is furnished as a complete unit ready for installa tion in any vacuum system.
Consolidated Model 23-105
MICROMANOMETER Write for your free copy of this informative booklet. Ask for Bulletin CEC-1819-X10
(VITREOSIL)
resistivity. Best ultra-violet transmission (in transmis sion quality). VITREOSIL tubing avail able promptly
from
stock in four qualities. TRANSPARENT-SAND SURFACE, GLAZED· SATIN SURFACE Stock sizes transparent up * ι 32 mm. bore, opaque tu '· bore. Available for pmmpt shipment. Larger di'im· t " i , can be supplied on suiuu' order.
-Wk^
Can be had in all nor mal lengths.
Send
for
Bulletin
No. 9 for specifica tions and prices
VITREOUS REG'D TRADE MARK
SILICA
*®
CONSOLIDATED ENGINEERING Corporation Analytical Instruments 300 No. Sierra Madre Villa
for Science and Industry Pasadena 8,
California
THE THERMAL SYNDICATE, LTD. 12 East 46th St., New York 17, N.Y.
