TABLE 1.

Incubation conditions and weight loss of working electrodes in ZRA experiments

ZRA run	Chamber or electrode	Chamber components	Corrosion rate (mils/yr)
ZRA1 (blue)	WE1	15 mM lactate, 20 mM nitrate, inoculated	16
	WE2	15 mM lactate, 20 mM nitrate, no inoculation	65
ZRA2 (black)	WE1	15 mM nitrite, uninoculated	55
	WE2	15 mM nitrate, uninoculated	80
ZRA3 (pink)	WE1	15 mM lactate, inoculation and addition of 3 mM nitrite	16.1
	WE2	15 mM lactate, addition of 3 mM nitrite	39
ZRA4 (red)	WE1	20 mM nitrate, inoculated	79
	WE2	20 mM nitrate, no inoculation	102