V O L U M E 2 1, NO. 6, JUNE
1949
33 A
GLASS ABSORPTION CELLS OF FINE MADE BY
QUALITY
KLETT
Complete Electrophoresis Apparatus SCIENTIFIC
APPARATUS
Klett-Summerson Photoelectric Colorimeters Colorimeters - Nephelometers - Fluorimeters Bio-Colorimeters - Comparators - Glass Stand ards - Glass Cells - Klett Reagents
Speclfac
KLETT
M A N U F A C T U R I N G CO. 177 E A S T 87TH STREET N E W Y O R K . . . . Ν. Υ.
Çtcuuty QUoln Bcdcwce FOR LIQUIDS Specific Gravities of liquids may be read directly to the fourth decimal. Calculations are unnecessary. O n l y one roller type rider is required. The knob operated chain offers convenient and precise control. A4-011 S P E C I F I C G R A V I T Y B A L A N C E F O R L I Q U I D S
$135.00
A f t e r substitutes the plummet w i t h the slotted basket, four weighings furnish data for determining the specific gravities of solids. W i t h water soluble solids, other liquids may be used.
A4-012 S P E C I F I C G R A V I T Y
BALANCE FOR L I Q U I D S AND SOLIDS
$145.00
E.MACHLETT&SON Modern Tools of Science Since 1897 220 E. 23rd St., New York 10, Ν . Ύ.
Coleman Instrument Sales and Service
