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Clinical Chemistry 21: 1221-1224, 1975;
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Clinical Chemistry, Vol 21, 1221-1224, Copyright © 1975 by the American Association for Clinical Chemistry

Computer Interface for Data Acquisition and Control of an SMA 12/60

J. E. Davis 1 and J. W. Lewis 2

1 Departments of Pathology and Medicine, Washington University; and the Division of Laboratory Medicine, Barnes Hospital, St. Louis, Mo. 63110.
2 Departments of Pathology and Electrical Engineering, Washington University; and the Division of Laboratory Medicine, Barnes Hospital, St. Louis, Mo. 63110.

We present an approach to the computer enhancement of the "SMA 12/60" (Technicon Instruments Corp.). Practical and theoretical considerations led to a plugcompatible system, which did not require changes in the hydraulics or methodology of the SMA. Results obtained from eight channels of the SMA using the system as described show that a sample analysis rate of 120 per hour is feasible. A desirable consequence of the increased analysis rate is a 60% decrease in the required sample volume. Before the system can be used in a clinical environment, further development will be necessary, including detection algorithms for hydraulic malfunction.


Key Words: continuous-flow analysis • data processing • analytical systems

Submitted on April 10, 1975
Accepted on June 1, 1975




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Copyright © 1975 by the American Association for Clinical Chemistry.