Acute Toxicity of Fire Control Chemicals to Daphnia magna (Straus) and Selenastrum capricornutum (Printz)

Table 3

Table 3. Acute Toxicity (96-hr IC₅₀; mg/liter; 95% Confidence Interval in Parentheses) of Five Fire-Fighting Chemicals to S. capricornutum Exposed in ASTM Algal Assay Medium^a

Chemical	IC₅₀
Fire-Trol GTS-R	18a
	(17-20)
Fire-Trol LCG-R	10b
	(10-11)
Phos-Chek D75-F	48c
	(40-58)
Phos-Chek WD-881	24d
	(22-27)
Silv-Ex	15a
	(12-18)
^a Values with different letters are significantly different (P = 0.05).

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