LAΒ
GLASS
ZONE ELECTROPHORESIS A complete a p p a r a t u s f o r paper strips a n d starch blocks
MEASURE m o l e c u l a r weights a n d particle s i z e s exactly with
BRICEPHOENIX super-sensitive N E W light-scattering photometer For RESEARCH / CLINICAL OUTPUT / LARGE SCALE SEPARATIONS
Unique
Features:
1. Uses 2 widths of p a p e r strips, V2" a n d 1". 2 . Separates 10 ml samples by rapid and precise starch technique Snce Phoenix Universal 1 0 0 0 Series lighfScattenng Ρ hotometer
3 . F u r n i s h e d with sample applicator, pre-punched strips, wicks, buffer, reagents, dyeing a n d washing p a n s , record folders, etc. 4 . P a p e r carrier holds strips taut t h r o u g h o u t electrophoresis. 5 · Power supply designed especially for research. 6 · Complete
Nothing
illustrated
operating
to add but
instructions
provided.
water!
Write for Bulletin N3-10OO L a b o r a t o r y Glass & Instruments Corp. 514 West 147th Street New York 3 1 . Ν . Υ. Circle No. 67 A-1 on Readers' Service Card, page 73 A
PUMP Liquids · Gases · Slurries WITHOUT CORROSION OR CONTAMINATION
H e r e is a new a b s o l u t e i n s t r u m e n t for d e t e r m i n i n g h i g h m o l e c u l a r weights a n d small p a r t i c l e sizes, w i t h e x t r e m e s e n s i t i v i t y for light-sea t i e r i n g m e a s u r e m e n t s d o w n t o 12 m i c r o - m i c r o l u m e n s of b l u e light o r 0.01 m i c r o - m i c r o w a t t e of r a d i a t i o n . This completely self-contained photo meter measures absolute turbidity, dis symmetry and depolarization of d i l u t e s o l u t i o n s of h i g h - m o l e c u l a r - w e i g h t compounds. Weight-average molecular w e i g h t s c a n be d e t e r m i n e d from t h e s e d a t a a n d from r e f r a c t i v e i n d e x m e a s u r e ments, and m a x i m u m molecule dimen sion c a n be e s t i m a t e d from t h e d i s s \ m m e t r y measurement. T h e solute molecule can be si/e and anisotropvclassified, a n d c h a n g e s in m o l e c u l a r w e i g h t , p a r t i c l e size a n d a n i s o l r o p y c a n b e r a p i d l y followed. Get c o m p l e t e d a t a o n this p h o t o meter— used b\ government, university and industrial laboratories t h r o u g h o u t t h e world. MAIL COUPON FOR COMPLETE INFORMATION
PHOENIX PRECISION INSTRUMENT CO. PHILADELPHIA
40,
PENNSYLVANIA
Steel Fingers Forces Material Through Tubing Prices range from Write for Catalog
$ 5 5 to
depending on sire of pump and accessory equipment required.
Ϊ Γ Α Λ J W
SIGMAMOTOR Inc.
500 Vernon Street
·
Middleport, Ν. Υ.
Circle No. 67 A-2 on Readers' Service Card, page 73 A VOLUME
2 8, N O .
10,
OCTOBER
1956
Circle Nos 67 A-3, 67 A-4, 67 A-5. 67 A-6 on Readers' Service Card, page 73 A
67 A
