44 A
ANALYTICAL
CHEMISTRY
portable ELECTRIC OVEN
rçtail
NO QTHER OVEN OFFERS THESE FEATURES AT THIS LOW PRICE •
Fan-driven, forced-air circulation ·
inside dimensions 2 8 W " χ 2 4 " χ 2 0 " · light and easily moved than
5c; per
hour
·
·
Large
temperature
by
means of a d a m p e r * ^ACCURATE THERMOSTATIC CONTROL OPTIONAL (S $ 2 1 . 5 0 E X T H A
OTHER MODELS & SPECIAL EQUIPMENT A V A I L A B L E Write
PALO
for Descriptive
Literature
LABORATORY SUPPLIES, I n c . 81
for N e s s l e r Tubes
size-
Portable—
L o w operating cost—less
Adjustable
LUMETRON Colorimeter Mod. 450 A new photoelectric instrument of high accuracy For the measurement of pale colors and faint turbidities. * For all analytical colorimetric determinations in which only a slight coloration can be developed. * For sanitary examination of drinkable water and for analysis of water for municipal and industrial purposes. * For color standardization of lightly colored liquids such as kerosenes, sugar solutions, solvents, varnishes, liquid waxes, vegetable oils, beverages, cosmetics. * Replaces visual color comparison in Nessler tubes. Write for literature to
PHOTOVOLT CORP. 95 Madison A v e .
New York 16, N . Y.
Reade St., New York 7, New York
S o l v e n t E x t r a c t i o n s "holding up the works"? Modernize with a
"GOLDFISCH" EXTRACTOR N o w , with "Goldfisch" improved extraction a p p a r a t u s , you can d o the same work that used to t a k e all d a y in just 2 to 4 hours!
For, due to automatic release a n d
seal of the condensation chamber, v a p o r i z e d condenses quickly, steps up your
extraction
solvent process.
This unique extractor also reclaims a high p e r c e n t a g e of solvent, operates safely in o p e n rooms, soon pays for itself in time and labor saved. "Goldfisch"
apparatus
methods; it will speed
won't
change
them up
your
k e e p pace with increased production.
W r i t e for full
details . . . t o d a y ! No. 3 0 0 0 "GOLDFISCH" EXTRACTION APPARATUS Dimensions: 1 0 " χ 3 8 " χ 31 " high. A v a i l a b l e in 2, 4 , and 6 capacity units, complete with all glassware and r e a d y to o p e r a t e .
WRITE TODAY FOR FOLIO " F " C o m p a r a t i v e tests, prices, list of users
LABORATORY CONSTRUCTION COMPANY 1115 HOLMES ST. KANSAS CITY, MISSOURI
present
so that controls can
