V O L U M E 2 2, NO. 3, M A R C H
1950
39 A
7 unique design features... New Teschner-Machlett Manometer easier adjustment—less
breakage
1.
M e t a l construction
2.
U-tube of Pyrex glass with Τ your own laboratory.
throughout.
3.
Precise scale adjustments made b y means of device controlled b y a large plastic hand wheel.
4.
V i n y l i t e scale graduated 0 to 1 30 mm. on each side of the m i d point.
j o i n t can be easily replaced a
chainomatic
5.
Filter trap prevents dust from entering mercury column.
6.
" O n - o f f " knob opens and closes metal stopcock.
7.
Key slot in back for wall mounting.
41-536 T e s c h n e r - M a c h l e t t
in
Mercury Manometer..
.$45.00
E.MACHLETT & SON ESTABLISHED 1 8 9 7
Laboratory 220
APPARATUS · SUPPLIES · CHEMICALS
E A S T 2.3rd
S T R E E T · N E W Y O R K ΙΟ,
Ν.Ύ.
BECKMAN Model D U
Quartz
Spectrophotometer
This precision instrument was designed for re search and control work where an exceptionally high order of accuracy is required. I t s wide spectral range, m i n i m u m band widths, freedom from stray light and m a n y other features essen tial t o reliability and usefulness h a v e established this i n s t r u m e n t as the finest available for pre cision m e a s u r e m e n t s in t h e visible-ultraviolet region.
The Analytical
Tool
for Chemical
Research
Beckman Model D U Quartz Spectrophotometer, supplied complete, except for storage battery $1050.00
FOR IMMEDIATE SHIPMENT FROM STOCK
iwmmi New York Laboratory Supply Co., Inc. 76-78
VARICK
STREET
NEW
YORK
1 3 , Ν . Υ.
