This work was carried out to evaluate the combination Weibull model/data set of two soybeans seeds lots according to results of the electric conductivity test and verify the influence of three levels of increments in the performance of the parameters estimates. The performance of the model according to each level were different. The best combination model/data set was according to the measurements from each celI. The performance of the seed lot L2 was ?dose to linear? and the seed lot Li was ?reasonably dose to linear?. The seed lot L1 had 63.21% of the frequencies equal 6O.60a while the seed lot L2 had the same parameter equal to 52.97a.