Abstract: A spectrometric instrument passes flashing light through a sample and has a linear detector operated by the computer to integrate signals for an established number of flashes to obtain an integrated unit of the signal data, from which spectral information is displayed on a monitor. Over a full spectral range, the established number is determined as that which effects a highest peak height proximately below a preselected maximum, and light source voltage is adjusted to bring the peak height closer to the maximum. For a narrower spectral range, an operating number of flashes for a unit is increased above the established number to accommodate a lower highest peak in the range. Wavelength calibration uses peaks in the light source. Corrections are made for stray light and non-linearity of detector response. Calculation of auxiliary information derived from input of auxiliary data through a touch screen is displayed on the monitor.

Abstract: A primary chromatographic system is operated with a standard sample at several temperatures to generate primary retention times which are fitted to a function to determine thermodynamic constants to relate the times to temperature. A target chromatographic system is operated with the standard sample to generate secondary retention times. The function is used with these times to determine and an effective column parameter for the target system. The function then is used with this parameter and the primary times to determine a pressure program. Further operation of the target system with a application sample and the pressure program effects standardized retention times. A particular searching technique is utilized to apply the function. A temperature calibration technique with a selected sample measures column temperature for the target system, and a validation is done on the target system.

Abstract: The invention is a method and apparatus for generating a coded address list. The method is initiated by inputting an address list to a data processing device which then reads each address record on the address list. As an address record is read, a set of rules is applied to the record to determine whether or not a corresponding bar code can be assigned. If a bar code can be assigned, then the data processing device writes the address record and its corresponding bar code to a first list. If, however, a corresponding bar code is not determined for an address record, then the unmatched address record is posted to a second list. The first list is output for printing, while the second list is saved to memory. With respect to the second list, the system operator can: manually correct an address record on the list; delete the address record; or, output the address record to a printer for non-discounted mailing.