Table 3.

pH measured of series of dilutions of wood leachate with control medium to Daphnia after exposure for 48 h and the mean and SD values (n = 3).

Concentration of leachate (% v/v)	pH
	Name of wood leachate
	Mahogany	Cedrela	Wawa	Emire	Ceiba
Control	7.8 ± 0.1	7.8 ± 0.1	7.7 ± 0.1	7.7 ± 0.1	7.7 ± 0.1
20	6.9 ± 0.2	7.4 ± 0.1	7.8 ± 0.2	7.2 ± 0.3	7.9 ± 0.2
30	6.8 ± 0.1	7.4 ± 0.2	7.7 ± 0.1	7.1 ± 0.2	8.1 ± 0.1
45	6.5 ± 0.2	7.1 ± 0.1	7.6 ± 0.1	6.8 ± 0.1	8.0 ± 0.3
67	6.5 ± 0.1	7.1 ± 0.1	7.6 ± 0.2	6.1 ± 0.1	7.9 ± 0.2
100	6.1 ± 0.1	6.9 ± 0.1	6.9 ± 0.1	5.1 ± 0.2	6.7 ± 0.1