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Now, with one instrument, you can perform
SIX MAJOR MODES OF POLAROGRAPHIC ANALYSIS
Typical Curves Produced by Model 171 Solution: l f r 3 M Benzophenone, 10•' M Tetraethylammonium Bromide in Dimethylformamide.
DC POLAROGRAPHY N a t u r a l Drop ' 2 mV/second 2 / i A Full Scale i
PEAK CURRENT DC POLAROGRAPHY 0.5 Second Drop 10 m V / s e c o n d 1 |UA Full Scale
• DC Polarography • Peak Current DC Polarography • Pulse Polarography • Derivative Pulse Polarography • Phase Sensitive AC Polarography • Peak Current Phase Sensitive AC Polarography The PAR™ Model 171 Polarographii: Anulv/er and Re corder is Iho only available instrumnnl whii.n can perform ac, dc, and pulse polarography. It features: Current sensitivities ranging from microamperes Full Scale.
PULSE POLAROGRAPHY 1 Second Drop 20 mV/second 5 0 / i A Full Scale
1 nanoampere in son
Scan rate, scan range and starting potential inttependemly selcctable: Twelve scan rates from 0.1 lo 500 raV'S- scan ranges from 300 raV to 4.5 volts art; available with starting potential selectable anywhere within • Γι volts. Built-in three electrode capability wilh " 100 volts of com pliance. AC polarography frequencies i n t e m a l l v selectable: 20, BO. 135 Hz; modulation a m p l i t u d e s 0.1. 0.5, 1.0, 5, 10 raV- phasereadability to 0.1 degree; low-pass filter lime c o n s t a n t s to 100 s e c o n d s
DERIVATIVE PULSE POLAROGRAPHY
1 Second Drop 10 mV/second 50 μΑ Full Scale:
Normal and derivative pulse polarography with 40 m s potential pulse and 5 m S current readout. Mercury drop timer allows precisely calibrated drop times of 5, 2, 1. and 0.5 s e c o n d s with no distortion ol current wave-fnrms ior pulse p o l a r o g r a p h y a n d peak current meas urements. Internal Zener-diode regulated power suppliée which can bo calibrated against built-in s t a n d a r d cell. 1 1 x 1 7 X-Y recorder with calibrated scale expansion and zero-offset controls
AC POLAROGRAPHY Natural Drop 2 mV/ second 2 μ Α Full Scale 80 Hz 10 mV Mod. Amp. 100 mS T i m e Constant
Additional applications such as anodic stripping analysis. pH m e a s u r e m e n t , specific ion m e a s u r e m e n t , direct pol-'Utiometry a n d controlled potential electrolvsis can easilv be performed. The Polarographic Analyzer nnd Recorder, complete with mercury d r o p timer, X-Y recorder and connecting cahles is priced at $6,500. For more information or a demonstration write Princeton Applied Research Corporation, Box ί>β5, Princeton. N e w Jersey 08540 or call (609) 924-6835.
Also ask about the Model 170 Electrochemical System capable of performing virtually anv electrochemical experiment.
PRINCETON APPLIED RESEARCH CORPORATION Circle No. 72 on Readers' Service Card
PEAK CURRENT AC POLAROGRAPHY υ.ο o e g u n u u r o p
10 mV/second 2/iA Full Scale 80 Hz 10 mV Mod. Amp.
