titration

अज्ञात सान्द्रताको घोलको नापिएको मात्रा अर्को घोलको ज्ञात आयतनमा प्रतिक्रिया पूरा नहुँदासम्म थपेर त्यसको सान्द्रता निर्धारण गर्नु

a measured amount of a solution of unknown concentration is added to a known volume of a second solution until the reaction between them is just complete; the concentration of the unknown solution (the titer) can then be calculated