P A R R Self-Sealing OXYGEN BOMBS O f f e r e d in SIX d i f f e r e n t styles for the everincreasing number of routine and research tests r e q u i r i n g c o m b u s tion of solid or liquid s a m p l e s w i t h o x y g e n in a sealed b o m b .
Cat. No. 1101
Item
Volume Cover ml. Seal self-sealing 360 rubber ring
8
1102
360
self-sealing rubber" ring
C
1103
50
self-sealing "Ό" ring
D
1104
240
Ε
1105
340
compression screws plus " O " ring self-sealing "O" ring
F
110ό
340
self-sealing "O" ring
Gas Inlet automatic check valve automatic check valve needle valve automatic check valve needle valve w i t h inlet tube needle valve w i t h inlet tube
Scientific Glass Apparatus Co., Inc. 100 Lakewood Terrace Bloomfield, N . J .
In addition to manufacturing "Inter-Joint" glassware, this company distributes a com plete line of laboratory apparatus, instru ments, chemicals, standard glassware, and general supplies through its divisions in Bloomfield, N. J.; Albany, Ν. Υ.; Boston, Mass.; Chicago, 111.; Philadelphia, Pa.; and Silver Spring, Md. Glassware repairs and servicing electronic instruments are also functions of SGA.
Scientific Industries, Inc. 15 Park St. Springfield, M a s s .
Gas Outlet needle valve
Principal Uses and Features A general purpose bomb for calorimetry and combustion tests Calorimetry and combustion tests, same as 1101 without outlet valve Sulfur, chlorine and other combustion tests with micro samples Calorimetry and combustion tests involving shock and explosive pressures Precision calorimetry and combustion tests. Can be lined w i t h platinum Routine and research calorimetry or combustions. Excellent for high energy fuels. Can be Pt lined.
thru inlet valve thru inlet valve needle valve needle valve needle valve
Sepor Laboratory Supply 3 8 1 0 N . Broadway A v e . Chicago 1 3 , III.
Manufactures Sepor microsplitter, the Vibra-pad, and deals in laboratory apparatus. The Sharpies Corporation 2 3 0 0 Westmoreland St. Philadelphia 4 0 , Pa.
Ask tor Spec. 7 700 describing these bombs, or w r i t e to us about your needs for bombs or other small pressure vessels.
PARR I N S T R U M E N T
Manufactures a line of specialized labor atory apparatus and industrial timers. Of special interest are the ultra-buret, essen tially for micro and macro titrations, the Natelson microgasometer for blood gas analysis, a small rotator with interchange able disks, and a highly sensitive pH meter.
Manufactures centrifuges, pin-hole de tectors, ultrasensitive recording balances, and micromerographs for determining par ticle size distribution in finely divided powders.
CO.
MOLINE, ILLINOIS Circle No. 39 A on Readers' Service Card
an automatic, recording CHROMATOGRAPHIC RΕ FR A CΤ 0 Μ Ε Τ Ε R
that cuts research work
Sigmamotor, Inc. 3 North M a i n St. Middleport, N . Y .
Company's pumps force liquids, gases, or slurries through flexible tubing by multiple fingers that successively press against the tubing in a wavelike movement. Eliminates contamination and corrosion. Up to 1500 gph. Also small flow rotary tubing pumps and reciprocating piston type metering pumps for liquids and slurries.
Horace L. Smith, Jr., Inc. 2 4 1 6 West Car y St. Richmond 2 0 , V a . N o l o n g e r is it necessary f o r y o u t o p e r f o r m a l l the time-consuming w o r k associated w i t h chromatographic analysis. This differential r e f r a c t o m e t e r does a l l t h e w o r k — r e l i a b l y — accurately. Simply start the test, a n d the a n a l y s i s is m a d e a u t o m a t i c a l l y — u n a t t e n d e d . The final product . . . an accurate, permanent r e c o r d i n g of t h e results . . . a r e c o r d y o u can e x a m i n e i m m e d i a t e l y or file f o r f u t u r e use. O p e r a t i o n is so s i m p l e t h a i e v e n y o u r most i n e x p e r i e n c e d p e r s o n n e l can p e r f o r m critical analyses with ease. What's more, w h e r e great differentials are encountered the exclusive P h o e n i x r a n g e - e x t e n s i o n system p e r m i t s set t i n g t h e i n d i c a t o r on scale w i t h o u t t h e a n n o y a n c e o f c h a n g i n g cells . . . w i t h o u t u p s e t t i n g t h e z e r o c a l i b r a t i o n . . . a n d w i t h o u t loss of s e n s i t i v i t y o r a c c u r a c y . A s i n g l e d i a l a d j u s t m e n t is a l l t h a t ' s r e q u i r e d . SEND FOR BULLETIN R - 1 0 0 0 . N o For y o u r c o n v e n i e n c e . Just a t t a c h y o u r l e t t e r h e a d — or w r i t e :
PHOENIX 3805
N.
PRECISION 5th STREET,
·
ANALYTICAL CHEMISTRY
INSTRUMENT
PHILADELPHIA
Circle No. 75 A on Readers' Service Card
82 A
obligation. this a d t o
40,
CO. PA.
Provides process development engineering services and a wide variety of chemical proc esses for the chemical and chemical process industries including food processes, metal working, pulp and paper, textiles, plastics, and chemicals. Ivan Sorvall, Inc. Pearl St. N o r w a l k , Conn.
Designs, manufactures, and distributes Servall laboratory instruments. Special izing in all types of centrifuges, including angle centrifuges, superspeed, enclosed and automatic types, refrigerated, and a new unique 8-tube Szent-Gyorgyi & Blum con tinuous flow system for super-speed op eration. Also Porter-Blum ultra-microtome, homogenizer, and automatic pipet. Southern Instruments, Ltd. Frimley Rd. Camberley, Surrey, England
Manufactures Polarotrace, a direct-read ing polarograph and other electronic instru-
