For New C o n v e n i e n c e in F i l t r a t i o n s . . .
HIGH
Rep ro ducib ility
NYLAB'S
EXCEPTIONAL
Sensitivity N E W
improved
of
EASE
Operation
FILTER BELL
$10.75
Cat. No. 35070
all the features M i n i m u m Inside Dimensions: Diam. 90 M M ; side 120 M M ; H t . a t center 150 M M .
Ht. at
Smooth, efficient valve action with a redesigned Slide Valve featuring flat ground surfaces. Vacuum-tight closure assured b y a soft gasket acting against a glass b o t t o m plate.
you want are in the
JAco Console Comparator-Microphotometer
rubber
Any t y p e vessel m a y be used t o receive t h e filtrate.
What specifications would you include in a comparator-microphotometer you would design for yourself? Chances are that the features you would want most are found in this new JAco Instrument:
P e r m i t s wide choice of t y p e a n d size filter funnel using rubber stopper mounting.
High reproducibility — exceeds 0.5% . . .
speed is sufficient to measure 4 lines/min. or better.
NYLAB'S . -Λ SLIDE VALVE — ' ^ o V ^ e a l e î iersa.-.n.y'. Slide Valve:
$J
Exceptional sensitivity — yields full scale
deflection for effective slit size of 1 micron χ 0.7mm (700 square microns) or better . . . scattered light does not exceed 0.7% and linearity is within 3 % .
w
New ease of operation — desk height . . . Ca
foot control for drive . . . panel switches on left to free writing hand . . . manual coarse motion and motor driven fine motion (5 microns per second). Bright image — may be viewed in normally lighted room. Discover all the ivays the JAco Console Comparator-Microphotometer can help you by writing for full details today.
p " m i t s application or ^ e a s e ^ o f a vacuum in the bell jar wnΛ filtratlon vacuum in other parts ol ^ ^ system . - M a y a l s o ^ e ^ as wlth tir
be\r.
te
H S as m g enTal utility alone.
NEW YORK JAco
JARRELL-ASH
KEY TO
NYLAB
ALL
LABORATORY SUPPLIES
COMPANY
Laboratory Supply
COMPANY INC.
26 Farwell St., N e w t o n v i l l e , Mass.
7 6 Varick Street, N e w York 13, Ν. Υ. Telephone:
CAnal
6-6504
DETROIT EL CERRITO, CAL. PITTSBURGH, PA. 13680 Capitol Ave. 1344 Devonshire Drive 916 Greenhill Road Circle No. 51 A-3 on Readers' Service Card, page 49 A
SALES OFFICES Circle No. 51 A-1, 51 A-2 on Readers' Service Card, page 49 A
VOLUME
2 7, N O . 2, F E B R U A R Y
1955
51 A
