7. 5X D E H Y D R O G E \ 'CUVETTE 4)
Enzyme Assays Simplified ...with Linear Recording of Absorbance on Multiple Samples The Gilford Model 2000 Multiple Sample Absorbance Recorder significantly reduces data gathering time and effort by making the measurement of enzyme reaction rates a more exact, virtually auto matic procedure. This versatile Absorbance measuring and recording system is also readily converted for liquid column chromatography, DNA-RNA thermal denaturation, sucrose gradient centrifugation and other techniques. Stable, linear recordings of Absorbance are provided with full scale deflection of any 0.1 O.D., or greater, between 0.1 and 3.0 O.D.- plus, full scale deflection of 0.1 O.D. in the presence of high background densities. The automatic cuvette positioner precisely stations up to four "standard", micro or flow cells in the sequence desired and with dwell time adjustable from 1 sec. to 45 min. Write for brochure and quotation. Conventional Absorbance Measurements are also easier and more accurate with the Model 2000. Digital Readout from 0.000 to 3.000 O.D. Sensitivity control and shutter eliminated. No dark current. Completely line o p e r a t e d . 200-700 mu wavelengths.
gilford
Factory Trained Technical Consultants provide Direct Representation throughout U.S.A. INSTRUMENT LABORATORIES INCORPORATED - OBERLIN, OHIO Circle No. 211 on Readers' Service Card
MOBILITY AND SIMPLICITY OF INSTALLATION ADDS GREATER VERSATILITY TO THESE ALL-PURPOSE PUMPING SYSTEMS
HIGH VACUUM PUMPING FOR ALL
APPLICATIONS Evacuation to 5 χ Ι Ο 7 torr · Rugged construction guarantees continuous performance under most severe applications · Available in standard 2, 4 and 6 inch systems · Kinney liquid nitrogen baffles for maximum conductance with minimum backstreaming · Compact · All in one cabinet · Straight — thru pumping system · Dependable Kinney Mechanical Pump · High speed diffusion pump.
KINNEY VACUUM
IVISION THE NEW YORK AIR BRAKE COMPANY 3529 WASHINGTON STREET, BOSTON 30, MASS.
EVERYTHING
IN
VACUUM"
Circle No. 145 on Readers' Service Card
108 A
·
ANALYTICAL CHEMISTRY
Circle No. 89 on Readers' Service Card-
