Introducing The Model 303 Static Mercury Drop Electrode Module...
See what you've been missing! • Higher Sensitivity • Greater Convenience • Lower Cost • HIGHER SENSITIVITY The name of the game! The new 303 Static Mercury Drop Electrode Module gets you down to concentration levels that you were probably only guessing at before. With the 303 electrode, baseline distortions at ppb concentrations are drastically lowered and drop sizes are much larger. This means you'll get improved detection limits for both differential pulse polarography and stripping voltammetry (using the same static drop). Hang in there! You get higher sensitivity with the 303 because each mercury droplet, rather than growing continually as in the conventional approach, is caused to remain stationary at the optimum size over the course of each current measurement. This is a great way to overcome the baseline distortion caused by the differential capacitance curve. And talk about simplicity! There's no assembly required of the operator. Simply fill the reservoir with mercury and start running your analyses. A single moving part within the 303 Module controls the extrusion of each mercury drop. • GREATER CONVENIENCE Simple switchover! Use the Model 303 for either polarography or stripping voltammetry. Convert from one mode to the other by flipping a single panel switch. No other adjustments are necessary since the same capillary serves both techniques. And you'll appreciate the additional controls for purge, purge times, drop size, drop extrusion and drop dislodge. • L O W E R COST / Now that's progress! The Model 303 costs less than the two previous electrode assemblies you needed for doing ~~-^_ polarography and stripping voltammetry. The 303 Module includes the mercury electrode, reference and counter electrodes, purge tube, cell bottoms, electronics package and a sturdy support stand.
See how it's used... A GREAT INSTRUMENT MADE BETTER. . .
ANALYZE IT CONTINUOUSLY WITH . . .
THE MODEL 374-3 MICROPROCESSOR-BASED ANALYZER SYSTEM
THE MODEL 318 AUTOMATED BATCH SAMPLER INTERFACE
When your samples demand the utmost in voltammetric sensitivity and capability we've got it. The 374-3 combines the new Model 303 Static Mercury Drop Electrode Module with the popular Model 374 microprocessor-based polarographic analyzer to yield a truly unique approach to ultra-high sensitive voltammetry. The increased drop area of the 303 Module, the greatly reduced background current and the baseline storage feature of the microprocessor-based analyzer all combine to create the most favorable signal-to-noise ratio available in any commerical polarographic instrument.
Now you can apply automated voltammetry to the analysis of process streams, reservoirs, holding tanks, plating baths and the like with our new Model 318 Automated Batch Sampler Interface. The 318 incorporates an electronic control package and a cell that is automatically refilled at regularly timed intervals with aliquots of the solution to be analyzed. The 318, shown here with the new Model 303 Static Mercury Drop Electrode Module, can be used with the 174A Polarographic Analyzer/315A Automated Electroanalysis Controller combination or with the 374-1 and 374-3 Polarographic Analyzers.
A simple but elegant approach is used to create reproducible stationary mercury drops within the 374-3 System. A single vertically moving part controls the extrusion of each drop. Drops formed in this manner are stable for as long as you want. All set-up, scan, data reduction, calculation and symbol ization steps are monitored and controlled for you by the built-in 16-bit microprocessor. Blank and sample scans are stored in separate 750 point memories within the 374-3 to give you automatic blank subtraction during the data reduction and calculation stages. And for your methods development work you'll appreciate the 22 override switches which provide a high degree of analytical flexibility.
AN ECONOMICAL, HIGHLY SENSITIVE PACKAGE. . .
THE MODEL 174 POLAROGRAPHIC ANALYZER SYSTEM
A UNION OF TWO POWERFUL TECHNIQUES . . .
THE MODEL 310 POLAROGRAPHIC LIQUID CHROMATOGRAPHY DETECTOR The Model 310 Detector employs the new PARC Model 303 Static Mercury Drop Electrode Module to achieve ppb-level sensitivities for pharmaceuticals, pesticides, vitamins, metals, additives, pollutants and many other compounds. Typically 10 ng. ascorbic acid can be measured with little difficulty. The 310 Detector incorporates a specially-designed cell in which the LC eluate is led up and around the static mercury droplet. Since all substances that exhibit polarographic responses can be detected with the Model 310, applications for the detector are very broad.
This system combines the new 303 Module with the versatile Model 1 74A Polarographic Analyzer, the 315A Automated Electroanalyis Controller and the 9002A X-Y recorder—a complete package for polarography and stripping voltammetry. For more information on these new products, contact: Princeton Applied Research Corporation, P.O. Box 2565, Princeton, NJ 08540; or phone 609/452-2111.
PRINCETON APPLIED RESEARC AN
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