nestle wrote:I am going commercial with a jelly recipe. I am trying to convert a 7 jar recipe to 500 gallons. Am I to use different types of scales to measure sugar verses the liquids?
I assume your question might be about ounces (oz). There are (at least) two kinds, ounces of weight and fluid ounces.
Ounces of weight are a subdivision of the pound; there are 16 av. oz. per pound. You have to weigh these on a scale.
Fluid ounces are a subdivision of the gallon. There are 128 fl oz per US gallon. They are also marked on measuring cups ( 8 fl oz per cup). They are a volumetric measurement, you don't weigh them.
Other liquids have different densities, but a gallon of water weighs 8.34 lbs, so 128 fl oz of water weighs 133.4 av. oz., close to 1:1, but not quite.
