PLASTIC SEALLESS PUMP Standard
Future Articles
capacities are from y 3 to bO gpm
PLASTIC BODY BLOCK FLOW PATTERN
ι FLEXIBLE LINER
A rotor, mounted on an eccentric shaft in this plastic pump, rotates within a liner to create a progressive squeezing action on fluid trapped between the liner and the body block. All metal parts and mechanical action takes place inside the liner where fluid never reaches. This completely eliminates the need for stuffing boxes or shaft seals, guaranteeing no leakage. The pump is self-priming, operates wet or dry and is suitable for extremely corrosive fluids, abrasive slurries or viscous materials. Applications include pumping of acids, alkalies, distilled water, diatomaceous earth slurries, electroplating solutions, ceramic tile glaze as well as shear sensitive emulsions. Standard capacities are from 'a to 40 gpm with discharge pressure up to 50 psi. Materials of construction include Teflon, PVC, linear polyethylene, Buna-N, Bakélite or stainless steel for body blocks and Viton-A, Kel-F elastomer, Hypalon, Neoprene and Buna-N for the liner. These are the only parts in contact with the fluid. For additional information, write Vanton Pump & Equipment Corporation, Hillside, New Jersey or telephone Area Code 201 Murdock 8-4120. Circle No. 189 on Readers' Service Card
*90
ELECTRONIC CONTROLLED
S t r a y Light in U l t r a v i o l e t , V i s i b l e , a n d N e a r Spectrophotometry
Infrared
D e c i m i l l i g r a m D e t e r m i n a t i o n of N i t r o g e n w i t h a S i m p l e S e a l e d T u b e Combustion M e t h o d Keiichiro Hozumi
D e t e r m i n a t i o n of M i n o r C o m p o n e n t s in D e t e r g e n t P r o d ucts b y D i f f e r e n t i a l I n f r a r e d S p e c t r o m e t r y J. M. Blakeway and N. A. Puttnam
A M e t h o d f o r t h e D e t e r m i n a t i o n of O x y g e n in M i c r o g r a m Q u a n t i t i e s of O x i d e s of P l a t i n u m a n d O t h e r Reducible Oxides Θ. C. Fryburg and D. A. Otterson
Spectrofluorometric Drugs
Identification
of
Phenothiazine
T. J. Mellinger and C. E. Keeler
The Microscale I d e n t i f i c a t i o n of S e v e r a l Sugar Phos p h a t e s b y P a p e r C h r o m a t o g r a p h y a n d Electrophoresis Complete with attachments
HELLER
Analytical
Walter Slavin
ROTOR ON ECCENTRIC SHAFT
FACE PLATE
Listed below are papers to appear in forthcoming issues of Chemistry
F.O.B. Lai Vegas
LAB MIXER
Romano Piras and Enrico Cabib
R a p i d - S c a n n i n g Mass S p e c t r o m e t r y : Analysis of Fractions f r o m C a p i l l a r y raphy
The Continuous Gas C h r o m a t o g
J. A. Dorsey, R. H. Hunt, and M. J. O'Neal
Estimation of M e r c u r y in Biological M a t e r i a l b y N e u t r o n Activation Analysis Hamilton Smith A m p e r o m e t r i c D e t e r m i n a t i o n of V a n a d i u m in V a n a d i u m Metal
Γ · CONSTANT TORQUE
R. A. Lannoye
• STEPLESS
G a s Solid Elution C a r b o n Black
VARIABLE DC SPEEDS FROM AC LINES .___
,
• Thyratron tubes on the Heller GT-21 controller supply demanded current by converting power in stepless variation to the direct current motor. Assures constant torque as mixes become either
__..
^d
viscous or fluid. Variable, reversible motor has direct and s e a r drive. Armature shaft speed, 0-5000 rpm. Gear shaft 18:1 ratio, Chuck, s h a f t s , 3-step pulley included.
Chromatography
with
Graphitized
C. G. Pope
A Radioisotopic Assay f o r N e o m y c i n s B, C, a n d N e a m i n e D. G . Kaiser P h o t o m e t r i c T i t r a t i o n of B e r y l l i u m T. M. Florence and Y. J. Farrar
Order from your Laboratory Supply Dealer or write—
GERALD K. HELLER CO. 2S73 South Western Street ·
Us Vegas, Nevada ·
P.O. Box 442$
A d v a n c e s in t h e T h e o r y of P l a t e H e i g h t in Gas C h r o m a tography J. C. Giddings
Circle No. 46 on Readers' Service Card 168 A
·
ANALYTICAL CHEMISTRY
Circle No. 71 on Readers' Service Card
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