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)