The Orion 9512BNWP Ammonia Electrode allows fast, simple, economical and
accurate measurements of dissolved ammonia in aqueous solutions. This
gas-sensing electrode can also be used to measure the ammonium ion after
conversion to ammonia, or organic nitrogen after Kjeldahl digestion of the
sample. Sample color and turbidity do not affect the measurement, and
samples need not be distilled. Almost all anions, cations, and dissolved
species, other than volatile amines, do not interfere.