mg/kg to ppm

[Unregistered]

Convert lead concentrations in ash from mg/kg to ppm

[Robert Fogt]

Re: mg/kg to ppm

mg/kg is the same as ppm, so no conversion will be necessary.

mg/kg = 0.001/1000 = 0.000001 = 1/1,000,000 = ppm

[Unregistered]

Re: mg/kg to ppm

mg/kg is the same as ppm, so no conversion will be necessary.

mg/kg = 0.001/1000 = 0.000001 = 1/1,000,000 = ppm

thanks a lot

[Mike]

Re: mg/kg to ppm

mg/kg is not equal to ppm. The conversion depends on the density of both substances. In other words, mg/kg is not mg of water to kg of water, it is mg of x in kg of y.

[JohnS]

Re: mg/kg to ppm

mg/kg is not equal to ppm. The conversion depends on the density of both substances. In other words, mg/kg is not mg of water to kg of water, it is mg of x in kg of y.

Ppm on a mass over mass basis is exactly mg/kg. You might want to look at sections 7.10.3 and 8.6 of NIST SP811.

[Mrs X]

Re: mg/kg to ppm

mg/kg is not equal to ppm. The conversion depends on the density of both substances. In other words, mg/kg is not mg of water to kg of water, it is mg of x in kg of y.

Hi Mike, for your example here, remember that it is mg of x in kg of (x+y). If you have a question, you are welcome to ask it.

[Unregistered]

Re: mg/kg to ppm

mg/kg to mg/l?

[Unregistered]

Re: mg/kg to ppm

Isn't it the case that "ppm" is a relative volumetric ratio, regardless of density, whereas "mg/kg" is a relative mass ratio?

[Unregistered]

Re: mg/kg to ppm

[QUOTE=Unregistered;4284]Convert 2mg/kg to ppm

[JohnS]

Re: mg/kg to ppm

[QUOTE=Unregistered;63749]

Convert 2mg/kg to ppm

Parts per million can be computed on either a mass/mass, volume/volume, or moles/moles ratio. If mass/mass, 2mg/kg IS 2 ppm as milligrams and kilograms are 10^6 apart.

On a volume or mole fraction ratio, we have insufficient info.

Actually, because it is clear that it is a mass ratio, 2 mg/kg is the preferred form, rather than 2 ppm, which is ambiguous.

[Unregistered]

Re: mg/kg to ppm

Ppm on a mass over mass basis is exactly mg/kg. You might want to look at sections 7.10.3 and 8.6 of NIST SP811.

60 mg/kg to 100 ppm

[JohnS]

Re: mg/kg to ppm

60 mg/kg to 100 ppm

No, 60 mg/kg is 60 ppm

[lku]

Re:lb/kg/mg

medicaion ask for mg/kg is convert lb to kg then to mg.

[JohnS]

Re: lb/kg/mg

medicaion ask for mg/kg is convert lb to kg then to mg.

This sounds like weight-based dosing. You decide how much to give based on the weight of the patient.

If you have patient weight in pounds, multiply by 0.4536 kg/lb to get weight in kg. Then multiply by recommended dosing in mg/kg. That will determine how many milligrams to administer.

[Ajit-Poland]

Re: mg/kg to ppm

Convert lead concentrations in ash from mg/kg to ppm

Hi, is any one there to help me. I need to convert Aflatoxin 5 mg/Kg in ppb.