Flashcards in Calculations in Toxicology Deck (12):
What does PPM stand for?
Parts per million
What does PPB stand for?
Parts per billion
What does PPT stand for?
Parts per trillion
1 ppm equals what?
1 ppm = 1 mg (chemical)/kg (material)
What is the conversion of 1 ppm to a percentage?
1 ppm = 1 mg/kg
= 0.000001 x 100
How many places do you move the decimal point to convert from ppm to percentage?
4 to the left
How many decimal places do you move the decimal point to convert percentage to ppm?
4 to the right
How do you make a diluted solution from a concentrated stock solution?
mL needed = (% required dilution/% of the stock)) X (volume required in mL from the stock)
How do you convert from (g)/ton in feed to ppm?
100 g/ton = 110 ppm
1 g/ton = 1.1 ppm
What is the conversion from the level of drug in feed as ppm to toxicity (mg/kg)?
Toxicity (mg/kg) = (ppm in feed) X (% of feed consumed daily)
What is the conversion from toxicity (mg/kg) to level in feed as ppm?
Level in feed (ppm) = (toxicity (mg/kg)) / (% of feed consumed daily)