kaalumismeetod, mille puhul kogutud vedeliku netomass tuletatakse taara- ja brutomassist, mille mõõteväärtus on saadud vastavalt enne ja pärast vedeliku suunamist mõõtemahutisse teatud aja jooksul, weighing method in which the net mass of fluid/liquid collected is deduced from the tare and gross weights determined respectively before and after the fluid/liquid has been diverted for measured time interval into the weighing tank