Tomato seeds of IAC and Kada cultivars, each one represented by four lots, were
evaluated with the purpose of establishing a specific methodology to conduct the electrical conductivity
test and studying the possibility of conditionament period reduction in the electrical conductivity test,
searching for obtaining faster results. The electrical conductivity was conducted in different temperatures
(20 and 25ºC), number of seeds (25 and 50), water volume (50 and 75ml) and imbibing periods (1, 2, 3, 4,
8, 16 and 24 hours). It was concluded that when the electrical conductivity is conducted at a temperature
of 25ºC it presents larger efficiency of separation lots, for both cultivars, than 20ºC. The same permitted
the separation of the tomato seeds lots of the cv. IAC in different vigor level, having more efficiency
when performed with 50 seeds imbibed in 50ml of water and the cv. Kada when conducted with 25 seeds
imbibed in 50ml of water, at constant temperature of 25ºC, after four hours of imbibing.