FARRAND OPTICAL CO., INC

Circle No. 148 on Readers'Service Card. ANOTHER PROCEDURE ... SWEAT. Anal. Chem. Vol. 26, Pg. 773. GALVANOMETER. DEFLECTION. 501—. 20 *0...
3 downloads 0 Views 198KB Size
FOR VACUUM-DISTILLATION

nevaco The newest

addition

935

t o t h e Nevaco

line o f

vacuum p u m p s , t h e 935 offers a g u a r a n t e e d vacuum o f 0.015 m m o f mercury a n d a capacity o f 3 6 liters o f free a i r per minute a t 5 4 0 r p m

nevaco

The slower r p m assures longer life a n d less t e m p e r a t u r e extremes. The greater

is the new name for

all products monufaclured by:

p u m p i n g v o l u m e permits use o f larger vessels in t h e vacuum system, thus increasing p r o d u c t i o n capacity. Especially useful f o r pilot p l a n t a n d small p r o d u c t i o n runs w h e r e continuous o p e r a t i o n is r e q u i r e d . Price:

See your dealer o r w r i t e :

$120.00

NELSON VACUUM PUMP COMPANY 2133

Fourth

Street



Berkeley

10, C a l i f o r n i a

Circle No. 148 on Readers' Service Card

ANOTHER PROCEDURE X *Ref:SULFURIC ACID-INDUCED! MADE RELATIVELY SIMPLER FLUORESCENCE or S

CORTICOSTEROIDS MAX I. SWEAT, Anal. Chem. Vol. 26, Pg. 773 GALVANOMETER OEFLECTION

FARRAND®

Photoelectric FLUOROMETER T h e Farrand Photoelectric Fluoro m e t e r simplifies techniques a n d assures precise performance in fluorometric assay.

over a wide range of sensitivities for m e a s u r e m e n t s of e x t r e m e l y l o w c o n c e n t r a t i o n s i n m i c r o or macro v o l u m e s .

T h e instrument is designed t o ren­ der linear response and stability

U s e d by leading scientists through­ out the world.

BULLETIN

NO. 803R,

Engineering, Research Development, Design ond Manufacture of Precision Optics, Electronic and Scientific Instruments

with

list of users, sent upon

Emission Spectrum of Fluorescence Produced by 17- Hydroxycorticosterone in Etnanolic Sulfuric Acid Solution

request

FARRAND OPTICAL CO., INC. Bronx Boulevard and East 238th Street, New York 7 0 , Ν. Υ. Circle No. 140 on Readers' Service Card V O L . 3 1 , N O . 2 , FEBRUARY 1 9 5 9



7 5 A