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You need a very sensitive scale to measure 4mg reliably and consistently.

If possible you could make a homogeneous mixture with some inert ingredient and get a larger sample to weigh, making errors less pronounced. I.e. you could mix 1 gram into 999 grams of inert stuff, then measure 400 milligrams of the mixture to get 4 mg of the desired substance.

(dilution in a liquid is another means of accomplishing the same thing).

Q: How do you measure out 4 mg?

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It is some bizarre measure with units [L]-4[T]2

This cannot be sensibly answered. Milliliters (mL) is a measure of volume, mg is a measure of weight or mass.

This cannot be sensibly answered. A milliliter (mL or ml) is a measure of volume, mg is a measure of weight or mass.

You misunderstand!!! 'mg' is a measure of 'mass' 'ml' is a measure of liquid voilume. You need to know the density of the substance to abkle to compare.

No; mg is a measure of mass, milliliter is a measure of volume.

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A gb (gigabyte) is a unit of storage. A mg (milligram) is a unit of mass. The two units measure two different things and therefore are incompatible.

No. A mg (milligram) is a measure of weight; a liter is a measure of volume.

It's difficult with tablets. Methadose is a liquid form and to measure it look on the label to see mg/ml.. if it is 30 mg/ml, and your dose is 60 mg.......draw out two ml with a baby syringe. Or a marked dropper.

Mg (milligrams) is a measure of weight or mass while ml (milliliters) is a measure of volume.

Mg for measuring crime. Ml is the volume measure.

Milligrams can't be converted to milliliters. Milligrams measure mass, while milliliters measure volume.

It is some bizarre measure with units [L]-4[T]2

mg

That depends entirely on what is being measured as teaspoons is a measure of volume whereas milligrams is a measure of weight. For example 1500 mg of styrofoam would weigh far less than 1500 mg of sand.

This cannot be sensibly answered. Milliliters (mL) is a measure of volume, mg is a measure of weight or mass.

25 mg of liquid =

1 g = 1,000 mg 2 g = 2,000 mg 3 g = 3,000 mg 4 g = 4,000 mg . . 40 g = 40,000 mg . . 400 g = 400,000 mg . . 4,000 g = 4,000,000 mg