1967 6 Oct. 162/1 (advt.) Anode Dark Current Nanoamps.
1978 Apr. 39/1 Within the probe a tiny silver/silver chloride and platinum cell polarographically measures the oxygen tension, which is linearly related to the reduction current of a few nanoamps.
1994 91 10729/1 Neuromuscular transmission occurs..with peak amplitudes of several nanoamps.