public void From_ValueAndUnit_ReturnsQuantityWithSameValueAndUnit()
        {
            var quantity00 = CatalyticActivity.From(1, CatalyticActivityUnit.Katal);

            AssertEx.EqualTolerance(1, quantity00.Katals, KatalsTolerance);
            Assert.Equal(CatalyticActivityUnit.Katal, quantity00.Unit);
        }