Footnote on the "safe fluoride concentration" figure for the caddisfly species

The figure "1.79 mg/litre" does not come from Level 3 but is directly sourced from the full IPCS source document.

It says:

"Camargo & La Point (1995) calculated "safe concentrations" (8760-h EC0.01s) for the last-instar larvae of several net-spinning caddisfly species. "Safe concentrations" ranged from 0.39 mg fluoride/litre (Hydropsyche pellucidula) to 1.18 (Hydropsyche lobata) and 1.79 mg fluoride/litre (Chimarra marginata). Further "safe concentrations" were calculated for the caddisfly species Hydropsyche bronta, at 0.2 mg fluoride/litre, and H. occidentalis and Cheumatopsyche pettiti, at 0.7 mg fluoride/litre (Camargo, 1996b)."

Source & © IPCS "Environmental Health Criteria for Fluorides", (EHC 227),
Chapter 9 : Effects on other organisms in the laboratory and field

Fluoride

Footnote on the "safe fluoride concentration" figure for the caddisfly species