The estimated uncertainty or 'error' associated with the specified measurement. The method used to estimate uncertainty should be described in the usage metadata.
SDN:P01::CCH88377
accepted
Concentration uncertainty of chromium {Cr CAS 7440-47-3} per unit volume of rainwater [dissolved plus reactive particulate <0.4/0.45um phase]
Cr_rainwater<0.4/0.45_ERR