the present invention a pulp sample is introduced into the container 14 at a temperature of between about 80 u00b0 c to 95 u00b0 c and pump 18 is activated to circulate the stock through the pipe 16 pump 18 and back to the tank 14 via line 22 in table 1 various circulation rates are compared with the standard method of releasing the latent properties and these results have also been plotted in fig2 the time to liberate latent properties is based on the canadian standard freeness since it is well established that the freeness is an excellent indication of whether the latent properties of the pulp have been released i e the latent properties of the pulp are available thus throughout the disclosure the freeness has been taken as an indication of release of the latent properties referring to fig2 and 3 and table 1 it will be apparent that at very low recirculation rates wherein the total stock in the container 14 is recirculated only once the total time to liberate the latent properties was to be equal to the time required by the standard method similarly from run 6 it will be noted even when an agitator as conventionally used was inserted and the stock is recirculated only once through the pump the.