PHOTOVOLT DENSITOMETRY EQUIPMENT
New building-block sys tem permits adding of units as required, from manual and semi-auto matic operation to fullyautomatic recording and integrating
for ELECTROPHORESIS and CHROMATOGRAPHY
• Far scanning of electro phoresis strips and readings on large sheets in chroma tography
• For work in visible and ultraviolet ranges
• For evaluation by colortransmission, reflection or fluorescence • For readings on filter pa per, agar, starch and other gels Write for Bulletin 800-S to:
PHOTOVOLT CORPORATION 95 Madison Avenue
·
New York 16, Ν. Υ.
Circle No. 101 on Readers' Service Card
PHOTOVOLT
Electronic
p H METERS
A complete line of pH meters incorporating modern electronic tubes and circuits, simple in operation and maintenance, featuring sealed amplifier plug-in units. Line-Operated Model 85 • Single range 0-14, scale length 3' , readable to 0.1 pH unit. • Fully stabilised, simple, compact, avuilabte with carrying case. • A full fledged pH meter usablt» with all iypes of electrodes.
Write for Bulletin i 195
$135.
Line-Operated Model Τ15 • Sinei'u range 0 14, scale length 4 ', leaclublt- lu 0.05 pH unit. • Temperature control 20 60 C, availuble with carrying case • Additional millivolt srale for redox measurements and titrations.
Write for Bulletin -225
MODEL
110
$175.
Line-Operated Model 110
.MODEL 8 5
• Single range 0 14. scale length 7 " , readable to 0 02 pH unit • Temperature control 0-100' C, voilage selector (or 80-260 volts. • Available with carrying cover & baseboard for bottles, beakers.
Write for Bulletin =105
$235.
Battery-Operated Model 125 • Single range R-14, scale length 5 1 !'-, readable to 0.03 pH unit. • Only 3 batteries, standard radio type, 2,000 hours of serv>ce. • Available with carrying frame for instrument, beakers, bellies.
Write for Bulletin 7.-118
$195.
MODEL
125
All piicc» include set uf glrjss t.*:i:-.hDde nnj ralumjl eiecticdc-, m comb-ncitian qluts-.CMd-calomeJ electrodo (probr)
See also Bulletin # 138 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
PHOTOVOLT
$68.
C O R P O R A T I O N 95 MADISON AVENUE. Ν. Υ. 16. Ν. Υ.
Circle No. 102 on Readers' Service Card VOL. 32, NO. 3, MARCH 1960 ·
75 A
