TABLE 2.

MPN dilution series results, expressed as the estimated range of cell concentrations at the 95% confidence level determined by using MPN Calculator (version VB6)^a

Well	[Cl−] (mM)	Cells ml−1 with the following methanogen substrates:
		H2/CO2	Acetate	Trimethylamine
C	200	60-250	2-5	15-50
D	1,041	0-2	0-2	6-25

^aSee http://www.i2workout.com/mcuriale/mpn/index.html.