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Dupont

DUPONT-MERCK PHARMACEUTICAL APPLIES SETRA LOAD CELL FOR PREPARING NUCLEAR MEDICINE SAMPLES

Setra Systems, Inc., has announced that its versatile line of Mass Monitor™ load cells is being successfully applied by The DuPont Merck Pharmaceutical Company based in Wilmington, DE. The radio pharmaceutical operations in Billerica, Mass., is using the Mass Monitor™ in the preparation of nuclear medicine samples. DuPont Merck selected Setra because of the Mass Monitor's high resolution and weighing accuracy, compact size, and low cost. Additionally, the Mass Monitor's rugged design and remote electronics allows DuPont Merck to operate the device in radioactive and chemical environments.

In operation in a bench-top setting for more than a year at DuPont Merck, Setra's load cell is used to weigh diluted solutions of radioactive material. The Mass Monitor plays a critical role in the process by allowing technicians to accurately measure the weight of progressively weaker dilutions to verify the overall concentration of each sample. According to Jack Donahue, Supervisor of Cyclotron Chemistry at DuPont Merck, "In this application, errors must be minimized. The Mass Monitor™ provides important accountability for our sample preparation."

The Mass Monitor is comprised of Setra's patented variable capacitance ceramic sensor, a weighing platform, custom signal conditioning circuitry, and an optional electronic display board. The load cell module is available in several weighing capacities from 200 grams to 50 kilograms, and is accurate to 10 ppm. Supplied electronic circuitry automatically linearizes and compensates the load cell's output signal for temperature effects. The circuit also includes a display connector and RS-232 serial data interface for bidirectional communications with the controlling or indicating device.

   
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