VOLUME
34A
19, N O .
12
P A L O - T R A V I S PARTICLE SIZE APPARATUS INSTRUMENTS OFFERS accuracy, case of manipulation, rapidity, versatility! Operates on sedimentation principle, making it possible to determine sub-sieve range from 325 mesh down to 2 microns. Elaborate calculations eliminated by use of graphical solution or slide rule calculator—both furnished with the instrument. Deter mination may be made on any substance, providing there is a liquid medium available in which the substance is insoluble, and a dispersing agent that will disperse the particles.
with SCHAAR Transparent/ COVERS/
W r i t e (or
Bulletin 1404-N.
Keep the dust away from sensitive parts—pro tect them from corrosive fumes. These strong, durable laboratory covers are made of transparent cellulose acetate, bound in metal, with all corners heavily reinforced. Equipped with con venient handles.
Our New COMPLETE CATALOG IS NOW READY. Write today for your copy.
Cat. No. Suggested Use length 785/1 Trip Scales 16" 785/4 Analytical Balances 20" 1023 Microscopes (Diam. 10")
Width U" 12"
Height 10" 20" 16"
Price $ 9.60 $14.40 $ 6.00
Can be made in any size. Write for prices.
PALO-MYERS 81 READE STREET
WALL
AND
INC. ·
NEW YORK 7, N. Y.
TABLE
END
SCHAAR & COMPANY Complete Laboratory 7 4 8 W . L i X I N G T O N STREET
Equipment CHICAGO
7
SINKS
Experience t h a t Means Longer Life Sheldon's long and successful experience in meeting the functional requirements for laboratories of schools, hospitals, and industry is reflected by the long life of Sheldon-built equipment.
Specify Sheldon . . . Buy Sheldon
E. ,
Η.
Sheldon sinks are made of material — Soapstone or Ceramic—that assures long life under the rigorous demands of laboratory waste disposal. They are of the proper size, depth, and general construction to perform their work satisfactorily. Furthermore, Sheldon sinks are selected to make them adaptable for placement in a room as an integral part of wall or center tables so that all waste disposal may be met easily.
SHELDON
&
COMPANY
MUSKEGON,
MICHIGAN
