Table 5: Results of the strong-line method, derived using the semi-empirical calibration described in McGaugh (1994) and de Naray et al. (2004). Columns 2 to 6 show the measured equivalent width (including errors) for the LSB galaxy sample). Columns 7 to 9 gives the logarithm of the emission line relations as used in the R₂₃ method, Col. 10 gives the oxygen abundances and the last column shows the oxygen abundance in terms of solar abundance. The values of log([N II]/[O II]) are derived using upper limits for the [N II] measurements. The metallicities are derived from the lower branch values for log([N II]/[O II]) < -1 and from the upper branch for log([N II]/[O II]) > -1.
Name H $\beta$ [O II] [O III] $\lambda$ 4959 [O III] $\lambda$ 5007 [N II] log(R23) log(O32) log([N II]/[O II]) log(O/H) $X~ Z_\odot$

[Å] [Å] [Å] [Å] [Å]

LSB J22325-60155 4.42 $\pm$ 1.00 11.50 $\pm$ 1.50 5.35 $\pm$ 1.67 12.9 $\pm$ 1.60 0.80 0.83 $\pm$ 0.71 0.20 $\pm$ 0.13 -1.16 -3.96 $\pm$ 1.30 0.13

LSB J22330-60543 0.96 $\pm$ 0.13 4.26 $\pm$ 0.26 1.35 $\pm$ 0.19 3.52 $\pm$ 0.19 0.25 0.98 $\pm$ 0.58 0.06 $\pm$ 0.04 -1.23 -3.63 $\pm$ 1.15 0.29

LSB J22343-60222 1.79 3.95 $\pm$ 0.67 1.95 $\pm$ 0.65 4.33 $\pm$ 0.63 0.26 0.76 $\pm$ 0.27 0.20 $\pm$ 0.15 -1.18 -4.09 $\pm$ 0.48 0.10

LSB J22352-60420 0.67 $\pm$ 0.14 3.05 $\pm$ 0.47 0.63 $\pm$ 0.39 1.24 $\pm$ 0.38 1.11 0.87 $\pm$ 0.81 -0.21 $\pm$ 0.09 -0.44 -3.54 $\pm$ 1.04 0.37

LSB J22353-60311 1.70 $\pm$ 0.49 5.90 $\pm$ 0.81 1.01 $\pm$ 0.32 2.38 $\pm$ 0.52 0.91 0.74 $\pm$ 0.73 -0.24 $\pm$ 0.06 -0.81 -3.37 $\pm$ 0.74 0.54

**Table 5:** Results of the strong-line method, derived using the semi-empirical calibration described in McGaugh (1994) and de Naray et al. (2004). Columns 2 to 6 show the measured equivalent width (including errors) for the LSB galaxy sample). Columns 7 to 9 gives the logarithm of the emission line relations as used in the R₂₃ method, Col. 10 gives the oxygen abundances and the last column shows the oxygen abundance in terms of solar abundance. The values of log([N II]/[O II]) are derived using upper limits for the [N II] measurements. The metallicities are derived from the lower branch values for log([N II]/[O II]) < -1 and from the upper branch for log([N II]/[O II]) > -1.
Name	H $\beta$	[O II]	[O III] $\lambda$ 4959	[O III] $\lambda$ 5007	[N II]	log(R23)	log(O32)	log([N II]/[O II])	log(O/H)	$X~ Z_\odot$
	[Å]	[Å]	[Å]	[Å]	[Å]
LSB J22325-60155	4.42 $\pm$ 1.00	11.50 $\pm$ 1.50	5.35 $\pm$ 1.67	12.9 $\pm$ 1.60	0.80	0.83 $\pm$ 0.71	0.20 $\pm$ 0.13	-1.16	-3.96 $\pm$ 1.30	0.13
LSB J22330-60543	0.96 $\pm$ 0.13	4.26 $\pm$ 0.26	1.35 $\pm$ 0.19	3.52 $\pm$ 0.19	0.25	0.98 $\pm$ 0.58	0.06 $\pm$ 0.04	-1.23	-3.63 $\pm$ 1.15	0.29
LSB J22343-60222	1.79	3.95 $\pm$ 0.67	1.95 $\pm$ 0.65	4.33 $\pm$ 0.63	0.26	0.76 $\pm$ 0.27	0.20 $\pm$ 0.15	-1.18	-4.09 $\pm$ 0.48	0.10
LSB J22352-60420	0.67 $\pm$ 0.14	3.05 $\pm$ 0.47	0.63 $\pm$ 0.39	1.24 $\pm$ 0.38	1.11	0.87 $\pm$ 0.81	-0.21 $\pm$ 0.09	-0.44	-3.54 $\pm$ 1.04	0.37
LSB J22353-60311	1.70 $\pm$ 0.49	5.90 $\pm$ 0.81	1.01 $\pm$ 0.32	2.38 $\pm$ 0.52	0.91	0.74 $\pm$ 0.73	-0.24 $\pm$ 0.06	-0.81	-3.37 $\pm$ 0.74	0.54

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