p H METERS electronic
Line-Operated Model 85 * Single range 0-14, scale length 3", readable to 0.1 pH unit. * Fully stabilized, simple, compact, available with carrying case. * A full-fledged pH meter usable wilh all types af electrodes. Write for Bulletin i l 9 5
Line-Operated Model 115 * Single range 0-14, scale length 4", readable to 0.05 pH unit. * Temperature control 20-60"C, available with carrying case. * Additional millivolt seal? for rpdox measurements and titrations.
Write for Bulletin =225 Line-Operated Model 110 MODEL 85
* Single range 0-14, scale length 7", readable to 0.02 pH unit. * Temperature control 0-100"C, voltage selector for 80-260 volts. * Available with carrying covi»t & baseboard for bottles, beakers. Write for Bulletin .= 105
Battery-Operated Model 125 * Single range 0-14, scale length 5 1 Î " , readable tn 0 03 pH unit. * Only 3 batteries, itandaid radio type, 2,000 houis of service. * Available with carrying frame for instrument, beakers, bottles. Write for Bulletin -3118
Ail prices include sut of qiciss cl^cticd? end cci or->>l uIuctrcJL·. Wilh com bi nation gtass-rinrl-i-'ilm--! t'li'rticj-i* (p'ebe), ci+ditionp' price S3.00. See also Bulletin
# 738 on pH Meter Tester Mod. 25 for checking the
of pH meters without
MODEL 125 performance
to pH meters of any make.
C O R P O R A T I O N 95 MADISON AVENUE. Ν. Υ. 16, Ν. Υ.
For further information, circle number 70 A-1 on Readers' Service Card, page 97 A
PHOTO VOLT Densitometer
for Partition Chromatography and Paper Electrophoresis
Multiplier FLUORESCENCE METER Mod. 540
A photoelectric precision instrument for the rapid and convenient evaluation of strips and sheets of filter paper in partition chromatography and paper electrophoresis. Write for Bulletin
- 8 0 0 fo
P H O T O V O L T CORP, 95 Madison Avenue Also Colorimeters Fluorimeters Nephelometcrs
pH meters Reflection Meters Glossmcters
New York 16, Ν . Υ. Electronic Photometers Multiplier Photometers Interference Filters
Circle No. 70 A-2 on Readers' Service Card, page 97 A
High-sensitivity for measurement of low concentrations (fullscale for 0.001 microgram quinine sulfate)
Micro-fluorimetry with liquid volumes as low as 1 ml
Low blank readings, strict linearity of response
Universally applicable due to great variety of available filters, sample holders, and other accessories
Interference Filters for high specificity and for determining spectral distribution of the fluorescence
High-sensitivity nephelometry for minute turbidities
Fluorescence evaluation of powders, pastes, and solids, also in spot-tests on filter paper without elution
Write for Bulletin #392 to
PHOTOVOLT CORP. 95 Madison A v e .
New York 15, Ν . Ύ.
Circle No. 70A-3 on Readers' Service Card, page 97 A