[Unclenick]

These numbers are not correct. 28.3495 is the conversion for grams weight to an ounce of weight. A fluid ounce is larger than an ounce of water at 4°C, because it is the volume of the weight of water at almost the boiling point, where water is less dense. The correct conversion is:

1 fluid ounce = 29.5735 ml or cc's.