APMP comparison of measurement of surface emission rate of 36Cl large area source (APMP.RI(II)-K2.Cl-36)

► APMP comparison of measurement of beta particle surface emission rate was reported. ► Participants were NMIJ, KRISS, INER, NIST, PTB, NMISA and VNIIM. ► A 36Cl large area source was used in the comparison. ► All the results of the participants agreed within ±1%.