Bulletin of the National Research Centre

Table 1 Physico-chemical parameters of water with increase in concentration of indigo dye concentration

From: Sub-lethal toxicity of indigo dye (Indigofera tinctoria) on Oreochromis niloticus juveniles

Parameters	Control	0.5 (mg/l)	1.0 (mg/l)	1.5 (mg/l)	2.0 (mg/l)	2.5 (mg/l)
Temp (^°C)	22.78 ± 0.71^a	22.78 ± 0.70^a	22.75 ± 0.47^a	22.75 ± 0.69^a	22.75 ± 0.69^a	22.76 ± 0.70^a
pH	6.70 ± 0.27^a	7.71 ± 0.15^b	8.72 ± 0.16^b	7.14 ± 0.42^b	7.69 ± 0.22^b	7.30 ± 0.21^b
DO (mg/l)	5.80 ± 0.28^a	4.14 ± 0.22^b	4.14 ± 0.22^b	4.31 ± 0.27^b	4.51 ± 0.23^b	4.84 ± 0.23^b

Mean values in the same row with the same superscript do not differ significantly at P > 0.05

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