NEW PRODUCTS
Bench Tops f o r Work
Radioisotope
Iso-Shel, a material highly resistant to absorption of rays emitted by radio active isotopes, can be used as a bench or table top in research laboratories and hospitals. The resinous surface has a satin jet black finish. Ε. Η. Sheldon Equipment Co., Muskegon, Mich. 425 Continuous Unit
Flow
NEW-
Centrifugation
The Helixtractor, continuous flow unit, separates material in a vertical coil of plastic tubing placed on the in side wall of the head. The plastic tubing can be readily sterilized and the whole unit can be autoclaved. The Helixtractor can be attached to Model PR-2 refrigerated centrifuge. Technical Bulletin P-2. International Equipment Co., 12S4 Soldiers Field Road, Boston 35, Mass. 426 Lens C l e a n e r
Lenses can be cleaned and fogproofed by application of several sprays of liquid. Available in plastic bottles or metal wall dispenser for laboratory or plant use. Albert W. Pendergast Safety Equipment Co., Tulip and Longshore Sts., Philadelphia 35, Pa. 427 Single C h a n n e l A n a l y z e r
Model 33-10, antiwalk single channel analyzer, is a precision, highly stable differential pulse height analyzer. Output pulse time stability is less than 10 nanoseconds shift for 1 to 10 volts double delay input pulse with 0.25 ^second rise time. Radiation Instru ment Development Laboratory, Inc., 4501 W. North Ave., Melrose Park, 111. 428
CONNECTOR SIZES FOR VACUUM APPARATUS T H R E E N E W S I Z E S , t h e 5 0 m m , 7 5 m m , and 1 0 0 m m I.D. connec t o r s , are t h e latest a d d i t i o n s to an extensive list of Kontes " O " Ring C o n n e c t o r s in glass, stainless steel, a n d brass. V A C U U M A P P A R A T U S m a d e with Kontes " O " Ring Connectors requires m i n i m u m d i s p l a c e m e n t to a s s e m b l e , avoids lubricants, a n d holds v a c u u m s of 10- 6 m m of Hg. L U B R I C A N T F R E E c o n n e c t i o n s are o b t a i n e d because the hemi spherical c o n n e c t o r a r m s are s e p a r a t e d , but sealed by a Buna-N or Viton® " O " Ring*—not by a grease. This avoids s t i c k i n g and f r e e z i n g p r o b l e m s associated w i t h g r o u n d glass joints. M E T A L T O G L A S S c o u p l i n g is a simple m a t t e r now using a stand a r d glass c o n n e c t o r a n d a s t a n d a r d brass or stainless steel connector. C o m p a r e d to graded metal a n d glass seals, t h e rugg e d n e s s a n d flexibility of s u c h c o n n e c t i o n s are particularly impressive. *0ptional Viton " 0 " rings, which are recommended for service with steam, silicone greases, and oils, are also resistant to oxygen and ozone. The temperature limit using Buna-N is 150°C—with Viton 300°C. intermittently, 200°C. continuously. ©Viton is a registered trademark of E. I. duPont Co. For m o r e c o m p l e t e i n f o r m a t i o n request Bulletin 1161-A. Size & Approx. I.D., mm
K-67175 Glass
5 7 9 12 15 20
Per Pair
Single Arm
2.70 2.80 2.80 2.90 2.90 3.10
1.35 1.40 1.40 1.45 1.45 1.55
Size & Approx. I.D., mm
25 30 40 50 75
Sinele Arm
3.10 4.20 6.00 7.50 10.00 14.00
1.55 2.10 3.00 3.75 5.00 7.00
loot fShaped like Conical Pipe Flange.
K O N T E S G L A S S V i n e l a n d , New Midwest Distributor:
K-67175 Gla s Per Pair
C O M P A N Y Jersey
RESEARCH APPARATUS,
INC.
9 9 4 3 West Franklin A v e n u e , Franklin Park, Illinois
Kontes'
-y^ujA-a-rL-*-y*PcujLaSinfiLA
ΡΙ3Π
T h i s t a b l e l i s t s c o d e n u m b e r s a n d prices for special glassware d e s c r i b e d in t h e papers f r o m t h e p r e c e d i n g issue. W h e n o r d e r i n g , please give code n u m b e r a n d q u a n t i t y .
Optical
Instruments
Schmidt and Haensch polarimeters, saccharimeters, monochromators, spec troscopes, and refractometers are offered now in the U. S. by the sole agent of the German manufacturing concern. Literature on individual in struments is available. Pfaltz and Bauer, Inc., Empire State Bldg., New York 1, Ν . Υ. 429
CODE NO.
Glass parts only from Vol. 34, No. 8 (July 1962) Shown or described in PAGE FIGURE or COLUMN(S) LINE(S)
P-141-70 P-141-71
912 915
1 (Parts Quoted on Request) 3
P-141-72 P-141-73 P-141-74
922 1021 1038
2 2 (Parts Quoted on Request) 1 (Without Reservoir)
EACH
27,28
$8.05·
3,4
38.00*
1-7
19.50*
•Prices are not subject to discount. Circle No. 47 on Readers' Service Card VOL. 3 4 , N O . 9, AUGUST
1962
·
93
A
