▁advantage ▁by ▁adding ▁a ▁bit ▁of ▁this ▁liquid ▁mixture ▁when ▁the ▁to b acco ▁is ▁fabric ated ." ▁Lav ois ier ▁also ▁found ▁that ▁while ▁adding ▁a ▁lot ▁of ▁water ▁to ▁bulk ▁the ▁to b acco ▁up ▁would ▁cause ▁it ▁to ▁fer ment ▁and ▁sm ell ▁bad , ▁the ▁addition ▁of ▁a ▁very ▁small ▁amount ▁improved ▁the ▁product . ▁There after ▁the ▁fact ories ▁of ▁the ▁Farm ers ▁General ▁added , ▁as ▁he ▁recommended , ▁a ▁consistent ▁ 6 . 3 % ▁of ▁water ▁by ▁volume ▁to ▁the ▁to b acco ▁they ▁processed . ▁To ▁allow ▁for ▁this ▁addition , ▁the ▁Farm ers ▁General ▁delivered ▁to ▁ret ail ers ▁sevent een ▁ oun ces ▁of ▁to b acco ▁while ▁only ▁charg ing ▁for ▁six teen . ▁To ▁ensure ▁that ▁only ▁these ▁author ised ▁amounts ▁were ▁added , ▁and ▁to ▁exclude ▁the ▁black ▁market , ▁Lav ois ier ▁saw ▁to ▁it ▁that ▁a ▁wat ert ight ▁system ▁of ▁checks , ▁accounts , ▁super vision ▁and ▁testing ▁made ▁it ▁very ▁difficult ▁for ▁ret ail ers ▁to ▁source ▁cont rab and ▁to b acco ▁or ▁to ▁improve ▁their ▁prof its ▁by ▁bul king ▁it ▁up . ▁He ▁was ▁ener get ic ▁and ▁rig orous ▁in ▁implementing ▁this , ▁and ▁the ▁systems ▁he ▁introduced ▁were ▁deeply ▁un pop ular ▁with ▁the ▁to b acco ▁ret ail ers ▁across ▁the ▁country . ▁This ▁un pop ular ity ▁was ▁to ▁have ▁consequences ▁for ▁him ▁during ▁the ▁French ▁Revolution . ▁ ▁Royal ▁Commission ▁on ▁Agricult ure ▁Lav ois ier ▁ur