Hard.
in mg/L

Fluoride
in mg/L

Reference

Conditions

Organisms

17

51

Pimental & Bulkley, 1983a

12°C, 96-h

Oncorhynchus mykiss, 2g,

49

128

Pimental & Bulkley, 1983a

12°C, 96-h

Oncorhynchus mykiss, 6 cm

182

140

Pimental & Bulkley, 1983a

12°C, 96-h

Oncorhynchus mykiss

385

193

Pimental & Bulkley, 1983a

12°C, 96-h

Oncorhynchus mykiss

44*

5.9-7.5

Angelovic et al., 1961b

7.2°C, 240-h

Oncorhynchus mykiss

44*

2.6-6.0

Angelovic et al., 1961b

12.8°C, 240-h

Oncorhynchus mykiss

44*

2.3-7.3

Angelovic et al., 1961b

18.3°C, 240-h

Oncorhynchus mykiss

12

8.5

Herbert & Shurben, 1964

Oncorhynchus mykiss

12*

150-200

Kaplan et al., 1964

25°C

Rana pipiens, frog

169.3

335

Fieser et al., 1986

15°C, 48-h

Daphnia magna

169.3

284

Fieser et al., 1986

20°C, 48-h

Daphnia magna

169.3

220

Fieser et al., 1986

25°C, 48-h

Daphnia magna

44*

2.7-4.7

Neuhold & Sigler, 1960

12.8°C, (480-h)

Oncorhynchus mykiss

73

20

Wright, 1977

12°C, (96-h)

Salmo trutta, brown trout

73

33

Wright, 1977

12°C, (48-h)

Salmo trutta, brown trout

73

60

Wright, 1977

12°C, (12-h)

Salmo trutta, brown trout

4.9

38.5

Spohn, 1984

96-h

Oncorhynchus mykiss

49.7

45.6

Spohn, 1984

96-h

Oncorhynchus mykiss

96.4

77.0

Spohn, 1984

96-h

Oncorhynchus mykiss

173

680

Leblanc, 1980

24-h, 22°C

Daphnia magna

173

340

Leblanc, 1980

48-h, 22°C

Daphnia magna

78

340

Smith et al., 1985

96-h, 20°C

Gasterosteus aculeatus

146

380

Smith et al., 1985

96-h, 20°C

Gasterosteus aculeatus

300

460

Smith et al., 1985

96-h, 20°C

Gasterosteus aculeatus

23-62

200

Smith et al., 1985

96-h, 15°C

Oncorhynchus mykiss

20-48

315

Smith et al., 1985

96-h, 16-20°C

Pimephales promelas

20-44

315

Smith et al., 1985

96-h, 15-19°C

Pimephales promelas

92

180

Smith et al., 1985

96-h, 20°C

Pimephales promelas

256

205

Smith et al., 1985

96-h, 20°C

Pimephales promelas