Bayyana hanyar da ta dace don auna 'tsawon aiki' ($H_w$) na magudanar ruwa a cikin yanayin sarrafa inganci.

Auna tsayin aikin $H_w$ yana buƙatar madaidaicin ma'auni. An matsa ruwan bazara zuwa ƙayyadadden tsayin aikin $H_w$, kuma ana yin rikodin ƙarfin da ya haifar $P$. Ba daidai ba ne don auna tsayin kyauta $L_f$ sannan a cire jujjuyawar, saboda yawan lokacin bazara galibi ba ya miƙewa a cikin $20%$ na farko da $20%$ na bugun jini. Ya kamata a auna nauyin a yayin bugun jini na 'matsi' don kauce wa tasirin hysteresis. Don maɓuɓɓugan maɓuɓɓugan maɓuɓɓugan maɓuɓɓugan maɓuɓɓugan maɓuɓɓugan maɓuɓɓugar ruwa, iyakar 'shimmed' dole ne su kasance daidai da faranti. Duk wani sabani a cikin daidaiton faranti na gwaji zai haifar da rashin ingantaccen karatu saboda rashin daidaituwar igiyoyin ruwa.