PHOTOVOLT A
complete line
simple
in
of pH
opération
Electronic
meters incorporating
and
maintenance,
p H METERS
modem electronic
featuring
sealed
tubes and circuits,
amplifier
plug-in
units.
Line-Operated M o d e l 85 • Single range 0-14, scale length 3 ' ' , readablo t o 0.1 pH unit. • Fully stabilized, simple, compact, n v a i l o h l e w i t h carrying case. • A full-fledged pH meter usable with a l l types of plectrodps. Write for Bulletin s 195 $115. Line-Operated M o d e l 115 • Single rangr» 0-14, scale length 4 " , readablo t o 0.05 pH unit " Temperature control 20-60 "C. available with carrying case. • A d d i t i o n a l millivolt scale f o r rpdox moa su rumen's e n d titrations. Write for Bulletin - 2 2 5
MODEL 8 5
ill MODEL
110
$145.
Line-Operated M o d e l 110 • Single range 0-14. scale length 7" . readable to 0 0? pH unit. • Temperatuio control 0-100 C, voltagp selector for 80-260 volts. • Avoilabln w i t h carrying cover & b a s e b o u i d ' o r bo*tles. beakers Write for Bulletin ^105
$215.
B a t t e r y - O p e r a t e d M o d e l 125 • Single rangp 0-1-i, scaln Ipngth 5 1 ·?", readablo to 0.03 pH unit. • Only 3 batteries, slandard radio type, 2.000 hours of service.' • A v a i l a b l e w i t h carrying frame f o r instrument, beakers, bottles. Write for Bulletin - 1 1 8 $175. All prices inclura' set cf gla«s i-lnct'rvJ** nnd rrilome! electrode, oi combination " g'ass-cina-ca omel c l r r ^ Q d u ( p r o b e ) .
MODEL
125
See also Bulletin # 7 38 on pH Meter Tester Mod. 25 for checking the performance of pH meters without electrodes or buffers, applicable to pH meters of any make.
MODEL
115
$58.
C O R P O R A T I O N
PHOTOVOLT
95 M A D I S O N A V E N U E , Ν . Υ. 16. Ν . Υ.
Circle No. 85-1 on Readers' Service Card
uilil.iHilrVJilMil •vVUM·]:,»] for Partition Chromatography and Paper Electrophoresis
VARIABLE-RESPONSE RECORDER for densitometry in paper electrophoresis
Recording function electrically adjustable from linear to logarithmic and trans logarithmic 3
A photoelectric precision instrument for the r a p i d and
convenient e v a l u a t i o n
of strips a n d
Sensitivity adjustable from 10 to 200 millivolts
sheets
of filter p a p e r in partition c h r o m a t o g r a p h y
and
p a p e r electrophoresis.
Dtsignid specifically to be used with scanning densitometers for correctlycemiinsattd quantitative evaluation of electrophoretic patterns on filter paper
Write for Bulletin ~800 to
PHOTOVOLT CORP. 95 Madison Alto Colorimeters 1 Fluorimeters I Nephelometers |
Avenue pH meters Reflection Meters Glossmcters
New
York
Circle No. 85-2 on Readers' Service Card 76 A
·
ANALYTICAL CHEMISTRY
16, Ν.
Υ.
Electronic Photometers Multiplier Photometers Interference Filters
Write for Bulletin # 1 1 0 0 Alto :
Densitometer» pH Meier* Colorimeter* Fluorescence Meter* Electronic Photometer* Multiplier Photometers
PHOTOVOLT 95 Madison Ave.
CORP.
New York
Circle No. 85-3 on Readers' Service Card
1 6 , Ν . Υ.
