NEW
3
VALUABLE TIME
SAVERS
MOISTURE DETERMINATION BALANCE: Sample Weight 10 Grams . . . Sensitivity (10 Mg.) = .01 Gram— 0.1%. With this new Ohaus combination drying unit and precision balance, not only can you measure easily and accurately the moisture content of a wide variety of products and materials, but you can read the moisture loss directly and continuously throughout the entire drying cycle as the moisture is being driven off—actually plot the loss of weight against timet Repeated tests can be run automatically by simply setting the timer. Write for Bulletin 6-A.
1
B-2399X supply:
Moisture
Determination
Balance,
115 volt, 6 0 cycle, 6 5 0 w a t t .
12V 2 " x l O " x l 5 "
high.
Power
Price, including box of 25 disposable
liners
$295.00
REFRIGERATED CENTRIFUGE: In addition to high speed, this International Model HR-1 offers large capacity and low controlled temperatures. It spins two angle heads—an 8-place 50-ml. size which delivers 40,000xG., and a 6-place 250-ml. delivering 26,000xG. A unique refrigeration system maintains the temperature of the material at 0° C. Ask for complete information.
2
C-2750X
M o d e l HR-1 Refrigerated Centrifuge, 2 8 " x 3 8 " x 3 9 " high, for 2 0 8 -
2 3 0 volts, A . C . , 6 0 cycles, single phase. Price, without heads
$2,275.00
MOLECULAR MODEL K I T : ^ Because the atoms in this inexpensive kit are as compressible as the actual molecules, the known flexibility of molecules may be qualitatively demonstrated for the first time. The kit contains 100 atom models made of pliable polyvinyl chloride and numerous polyethylene connectors for quickly and easily constructing all existing organic forms and many inorganic forms without the use of tools. Each atom is magnified 165,000,000 times and is an accurate representation of van der Walls' radii. Send for attractive h-color circular.
3
M-9316X
Molecular M o d e l Kit complete w i t h instructions
WRITE FOR LITERATURE
$49.50
SCIENTIFIC GLASS APPARATUS CO., INC. BLOOMFIELD
-
NEW JERSEY
LABORATORY APPARATUS - INSTRUMENTS - CHEMICALS - GLASSWARE For further information, circle numbers 35-1, 35-2, 35-3 on Readers' Service Card, page 89 A
VOL 3 1 , NO. 1, JANUARY 1959
·
35 A
