A TDI is an estimate of the amount of a substance in air, food or drinking
water that can be taken in daily over a lifetime without appreciable health
risk. TDIs are calculated on the basis of laboratory
toxicity data to which
factors are applied.
TDIs are used for substances that do not have a reason to be found in food (as
opposed to substances that do, such as additives, pesticide residues or
veterinary drugs in foods- see also Acceptable Daily Intake : ADI).
The term "tolerable daily intake" was found in the following pages: