TABLE 1. RESISTANCE OF AQUATIC INVERTEBRATES TO PHENOL (con't.) 



Degree of 48 hrs. 



Resistance Species LC50 mg/1 



Highly Piona coccinea Koch 1500 



Resistant Hydryphantes ruber De Geer. 1680 



Limnochares aquatica L. 1560 



Mideopsis orbicularis Mull. 1720 



Arrhenurus globator Mul 1 . 1840 



185 



