Considering α Fraction Collector? Consider Buchler. Liquid chromatography, density gradients, electro phoresis . . . anywhere a versatile, automatic fraction collector is required, Buchler has the exact model. Linear, circular, long run, short run, sectional, micro . . . you name it, we make it. Buchler Fraction Collectors offer a choice of collec tion methods, solid state electronics for cold room use, refrigeration options, and ease of conversion for changes in application. We believe Buchler Fraction Collectors are — dollar for dollar — the best value on the market. So if you're collecting fractions without collecting our literature, you could be missing something. Write today for complete information.
SEARLE
Buchler Instruments Division of Searle Analytic Inc. 1327 Sixteenth Street Fort Lee New Jersey 07024
New Products
pH/Conductivity Analyzer Model 4403 offers pH measurements from 0 to 14, readable to two places, and five conductivity ranges between 0-1.4 and 0-140,000 Mohms/cm. Spe cific ion measurements (optional) may also be read either in millivolts or pH. Liquid crystal digital readout is fea tured. The 9 X 10 X 8-in. analyzer is available in 110 or 220-V 50/60-Hz models and is priced at $773. Markson Science, Inc. 404
Trace Analyses Electroanalytical System Model 174A/315 automated electroan alytical system is capable of providing part-per-billion analysis of metals, an ions, organics, pollutants, and phar maceuticals, utilizing a polarographic analyzer and automated electroanalysis controller. Automatic operation deaerates and blankets the sample so lution, preconditions the working elec trode, initiates and terminates the scan, times critical steps in the run, controls the stirrer, provides duplicate or triplicate runs, and controls strip chart advance. Priced at $4570. Princeton Applied Research Corp. 413
Laboratory Recorder
BUCHLER LINEAR COLLECTOR FOR 200 TUBES
CIRCLE 28 O N READER SERVICE CARD 1076 A • A N A L Y T I C A L CHEMISTRY, VOL. 46, NO.
12, OCTOBER
1974
Model 447 oscillograph includes one 14-channel magnet bank, resistor mounting board, and a remote control and record intensity control. The unit has a full 8-in. peak-to-peak deflection and records up to 42 traces. Features include 12 standard recording speeds ranging from 0.1 to 100 in./sec and a frequency response of 5000 Hz. Op tional features and equipment are available. Hathaway Industries, Inc. 414
