public static function fromMassAndVolume(Mass $mass, Volume $volume)
	{
		$grams = $mass->convertTo(UnitMass::grams());
		$liters = $volume->convertTo(UnitVolume::liters());

		$gramsPerLiter = $grams->value() / $liters->value();

		return new static($gramsPerLiter, UnitConcentrationMass::gramsPerLiter());
	}