# Performance Table

A table containing peak parameters characterizing the quality of the chromatographic system. Invoking the command opens the Performance tab.

The left-hand part contains the table, while on the right part the calculation type is selected.

Elements of the Performance Table

The following columns vary depending on the type of calculation used:

Statistical Moments

List of columns in the Performance Table - Statistical Moments

List of columns in the Performance Table - Width at 50%

Description of used symbols

Symbol | Description |
---|---|

RT_{i} |
- is the retention time of the component. |

Wh/2_{i} |
- is the peak width at half height. |

a_{i} |
- is the left half-width at 10 % height. |

b_{i} |
- is the right half-width at 10 % height. |

T0 | - is the unretained (dead) time of the column. |

Column Length | - in mm. |

A05_{i} |
- is the left half-width at 5 % height. |

B05_{i} |
- is the right half-width at 5 % height. |

Parameters influencing the calculation are stated in the right-hand part of the Performance tab:

The parameter defines the column dead time in minutes. The value is used to determine the capacity factor.

The length of the column in millimeters. The value is used to calculate the theoretical column plate height.

The method used to calculate some parameters in the table is specified here.

Statistical Moments - Calculations are based on statistical moments.

From Width at 50% - The peak width at 50% of the peak height and the corresponding half widths are used in the calculations.