labor, mis teostab ühikuetalonide soetamist, säilitamist, uurimist ja kasutamist, standard laboratory role in a country's measurement system is to conduct scientific metrology, realise base units, and maintain national standards

riigi hallatav juriidiline institutsioon (riigi etalonlabor vms), kelle ülesandeks on riigietalonide soetamine, säilitamine, uurimine ja kasutamine, institute (National Standard Laboratory, Designed Laboratory etc.) in a country that has a responsibility, sometimes set out legally, for the conservation of one or more national measurement standards