46A
ANALYTICAL
Laboratory Equipment
NEWS
OF THE MONTH
A U T O M A T I C TITRATOR Saves t i m e a n d effort
NEW POLARIZING MICROSCOPE Low-cost for industrial, educational use (American Optical.) Has reverse position for clear v i s i b i l i t y , built-in polaroid ana lyzer, c o m p e n s a t o r slot, single focusing adjustment, r o t a t i n g stage and built-in illu mination. Complete with double nosepiece and cabinet. Wideselection of objectives, eye pieces and compensa tors available at extra charge.
COLLECTIVE NUMERICAL PATENT INDEX
(Beckman Model K.) Speeds up and simplifies titrations, produces accurate, objective, reproducible results. Performs neutralization, oxidation-reduction, precipitation and complex-formation type titrations with either aqueous or nonaqueous solutions. Unit supplied complete. 27291 -.115 volts, 50/60 cycles... $740.00
to V o l u m e s 31—40 of
CHEMICAL ABSTRACTS
18561T $158.00 Descriptive bulletin sent on request
IMMERSION HEATER For fast convenient heating Heating element enclosed in re sistant fused quartz tube. Top portion remains cool for easy handling. Complete with cord and plug. For 115V, AC or DC. 15969T Wattage 125 Diameter Ά" Length 5V4* Immersion depth 3 " Each $10
500
%" 14" 8" $18
1000 1 13 7 $21
CHEMISTRY
#
Contains more than 143,000 entries; classified by coun
LABORATORY CART Saves miles of walking Stainless steel. Easy to maneuver. Has free-wheeling casters. Shelves insulated against noise. Measures I 5 i 4 " x 24". Size over-all, 31H"· Carrying capacity, 200 lbs. 7758T. . . $ 2 9 . 9 5 7 7 5 6 T . . . $54.50
tries in numerical order. #
Index references give v o l ume, page and location of patent abstract in CHEMI CAL ABSTRACTS.
(with larger shetf tpace, WA" x-27")
φ
COLUMN CLAMPS For quick easy adiustment
Classification number
is
by an
patent
enormous
ti mesa ver. (Varigrip.) Stainless steel. Flexible band with worm-drive thumbscrew adjustment, easily holds cylinders from 2 % " to 6V2" O.D. 872 I T Size 2V2to3'/ï" 3 % l o 4 f t * 4 % l o 5 W Each $ 3 . 5 0 $3.75 $4.00
5ftto6W $4.25
TUBING MANIPULATOR For handling glass tubing safely Eliminates the oldest accident hazard in the laboratory, inserting glass tubing into cork or rubber stoppers. Holds common sizes of tubing firmly but gently. Even if tubing breaks, the operator is protected. Ideal for breaking tubing safely. Of long-life Neoprene. 23586T (Box of 2) $5.95
ORDER YOUR CHEMICALS FROM WILLI
W h y not o r d e r your chemicals a n d a p p a ratus from one source? WILL'S stock o f chemicals includes Baker reagents, Merck chemicals, Eastman org a nics, National Aniline stains a n d indicators, Difco culture m e d i a , WILL "Biol o i d " clearing, mounting, fixing and e m b e d d i n g p r e p arations for microscopy, etc.
VISCOSIMETER For fast viscosity measurement (Zahn.) Simple, inexpensive device for checking viscosity of liquids. Time required for liquid to flow through orifice at bottomof cup is measured in seconds. Available in 5 orifice sizes for rated liquids: very thin, thin, m e d i u m , heavy, and extra heavy. 28046T Centipoise Range 20-85 30-170 170-550 200-900 250-1200
No. 1 2 3 4 5
#
Cloth bound, 182 pages, 7 ' / 2 " χ 10" overall, 8 col umns of listings per page covering
patents
ab
stracted in CHEMICAL AB STRACTS
Each $16.50 16.50 16.50 16.50 16.50
all
from
1937-46,
inclusive. PRICE $6.50 POSTPAID
Order from your nearest WILL office-warehouse. More data on these items will be sent at your request. PHONE—WRITE- -WIRE—TELETYPE WILL CORPORATION
Rochester 3, Ν. Υ.
WILL CORPORATION
New York 12, Ν. Υ.
WILL CORPORATION of Md.. Baltimore 1, Md.
Send orders and inquiries to;
Special Publications Department: American Chemical Society 1155 Sixteenth St., N.W.
SOUTHERN SCIENTIFIC CO., INC.. Atlanta 1, Ga. BUFFALO APPARATUS CORP.. Buffalo 5, Ν. Υ
Washington 6, D. C.
