Ν . I . L . Instruments are Laboratory Standards Because
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THEY ARE DESIGNED BY O U T S T A N D I N G SCIENTISTS THEY ARE PROVEN O U T I N THE BEST LABORATORIES
THE N.I.L.-JOYCE Κ
RECORDING A N D INTEGRATING MICRODENGITOMETER
CHROMOSCAN For accurate automatic measure m n l of c l e t ' i o p h o i e i ' S , diflu i l o n , and chromatographic sepa-aîions.
AGAFOR
EN THE
WORLD
THE APPARATUS
Complete electrophoretic separations in 4 5 minutes. A v e r a g e s a m p l e size O.OOl m l , resulting in sharpest zones w i t h m i n i m u m d i f f u s i o n . I m m u n o l o g i c a l reactions o b s e r v a b l e i m m e d i a t e l y f o l l o w i n g electrophoresis. Pattern m a y be inspected a n d photog r a p h e d t h r o u g h o u t processing.
Designed for use w i t h s t a n d a r d m i c r o scope slides. Eight patterns o b t a i n e d in a single run w i t h one c e l l , 2 4 w i t h three cells on same power supply. O n l y c o m m e r c i a l l y produced micro a n d Immunoelectrophoresis a p p a r a t u s complete w i t h c e l l , p o w e r s u p p l y , a g a r cutter, h u m i d i f y i n g units, v i e w e r , projector, a n d M i c r o f i x p a t t e r n holders. BULLETIN 2 5 7
MICRO
ELECTROPHORESIS ON
G R
Electrophoresis of human serum on cellulose acetate carried out with the N.I.L.A g o f o r Micro a n d Immuno Electrophoresis Apparatus. Running time 30 minutes. Trace was repeated 5 times to show perfect reproducibility of Chromoscan.
IMMUNO
CRYOSTAT THE PEARSE COLD MICROTOME The Only Refrigerated Microtome With All External Controls N o w a s s e m b l e d a n d serviced b y N.I.L. f o r d i s t r i b u t i o n in t h e U.S.A. and Canada.
• HOLDERS FOR: filter paper, starch, agar, potato gel, cyano gel, and cellulose acetate. • PROCESSES: gel plugs, glass slides, slabs, narrow and wide paper patterns, long and short strips, and solutions. UNIQUE CHROMOSCAN FEATURES 1. Double-beam optical system for stability and reproducibility. 2. Six-digit automatic readout integrator insures 20-fold more accuracy without base-line error than pen-type integrator. 3. Record may be expanded from 1:1 to 3:1 and 9:1 ratios. 4. Pattern may be viewed before and during scanning. 5. External light source assembly. 6. Interchangeable rectangular slits and circular apertures from 0.01 mm to 3 mm. 7. Holders accommodate wide filter range. 8. Special cams available to correct non-linearities between protein concentration and dye take-up, dye intensity and pen deflection. •k Send for BULLETIN 264
RESETTING CONTROL From fresh tissue t o m o u n t e d stained sections in 3 minutes.
FEATURES
MICROMETER
Cuts sections d o w n t o 1 micron. Serial sections cut a t 3 m i crons. Entirely r e m o t e l y c o n t r o l l e d . Thermostatic control b e t w e e n — 5 ° C. a n d — 3 0 ° C. For u l t r a - t h i n sections a n d f r i a b l e tissues k n i f e b l a d e c o o l e d t o — 5 0 ° C. Cuts freely a t a l l t e m p e r a tures; w i l l not rust. Instant a v a i l a b i l i t y f o r r a p i d biopsies. Low i n i t i a l cost a n d m i n i mum operating attention.
CAMBRIDGE MICROTOME
INSULATED
BULLETIN 2 5 9
OTHER MODELS:
Pearse Cryostat with Minot Microtome—Bulletin 7 - 1 0 0 0 j d g e Microtome in Horizontal Deep-Freeze—Bulletin 7 - 2 0 0 0
C a m b r
Conference
ANALYTICAL CHEMISTRY
Booth 6S~4th
Floor
National Instrument Laboratories, Inc. 828 EVARTS STREET, N.E.
·
UNIT
COVER
W A S H I N G T O N 18, D. C.
Circle Nos. 199, 200, 201 on Readers' Service Card 150 A
REFRIGERATION
NIGHT
Sec Us At The Pittsburgh
NIL
. CUTTING CONTROL
CONTROL " * ,
Telephone N O r t h 7-7582
