Results of computerization and automation of a Perkin-Elmer 240 carbon-hydrogen-nitrogen analyzer

These results indicate that a C, H, and N system can be automated and computerized for increased flexibility while maintaining a high degree of accuracy and precision. There are a number of significant advantages which can be realized in terms of hard-copy summaries, report formats that can be torn off and sent out, and tube files that can be used to summarize which samples are currently being run. There are some drawbacks in the fact that specialty runs must be made for high nitrogen-containing compounds, liquids, and hydroscopic materials. However, the time saving is substantial, and the analyst has blocks of time to run other determinations. Satisfactory turn-around times can be maintained. This indicates that the automation and computerization are well worth the efforts.