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program devoted to calculate probit analyses according to Finney (1972), Which used to illustrate the relation between stimulus and response in toxicological and biological studies.

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Ehab Bakr
editor of LdP Line


  • Very easy to input your data. Very easy to calculate it.

  • Save your data in a file and reopen, reedit and recalculate it any time later.

  • Calculate any value of LD, LC, LT... with upper and lower limits.

  • Give tables and graphics printout.

  • Make relative studies among several treatments and calculate index, number of folds and significant intervals.

  • Through "LdP Line" you have the ability to make control correction according to Abbott's, Henderson-Tilton's, Sun-Shepard's and Schneider-Orelli's formulas.