no observable effect

no observable effect

Environment adjective Referring to a lack of observable changes associated with a potentially dangerous or toxic chemical. See Bounty hunter provision, No significant risk, Proposition 65.
References in periodicals archive ?
2002) was termed a no observable effect level (NOEL) by the National Research Council (NRC 2005).
An addition of a eutectic modifier had no observable effect on the X-ray rating.
Even the fact that the Rota overturned over 90% of the appeals made to it from the United States has had no observable effect.
04 mg/kg/day), might be considered a no observable effect level (NOEL) from this experiment.
There was no observable effect of estradiol on the dorsal fin notch in these experiments.
In fact, one study published in the Proceedings of the National Academy of Sciences, states that "denatured type II collagen has no observable effect on the incidence and severity of the disease (arthritis).