There are 1000 µg in 1 mg. So if you divide the result number by 1000, you will get the result in mg/ml. Just what for? Or maybe it's enough to rename µg/mL to mg/L and then you won't need to calculate new numerical values?
ZJ
this is for a research project the solubility results need to be in mg I'm confused about why I have to change it but my supervisor recommended to do that, there is also a use of dilution factor and diffusion volume I just can't comprehend why?@Zbigniew Jońca
To convert the units from µg/mL to mg/mL, you need to divide the value in µg/mL by 1000. This is because 1 mg is equal to 1000 µg.
For example, if your calibration curve gives results in µg/mL and your sample concentration is 250 µg/mL, you can convert it to mg/mL as follows:
250 µg/mL ÷ 1000 = 0.25 mg/mL
Therefore, your sample concentration is 0.25 mg/mL.
It is important to note that when converting units, it is necessary to pay attention to the significant figures in the original value and the converted value. In this example, the original value has three significant figures, so the converted value should also have three significant figures. The final result should be reported as 0.25 mg/mL, rounded to three significant figures.
Your supervisor may want it changed because the official guidance on measurement results says that they should be expressed in units that involve the fewest zeroes in the numerical value. So a reult of 10 000 ug/ml would be expressed as 10 mg/ml, and not as 0.01 mg/ml.
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