AOAC Official Method 932.12 Solids (Soluble) in Fruits and Fruit Products
Refractometer Method
First Action 1932
Final Action 1980
(Insoluble matter present. Applicable to fresh and canned fruits, fruit jellies, marmalades, and preserves.)
Proceed as in 932.14C (see 44.1.04).%Soluble solids =%solids determined by refractometer ´ (100 - b)/100, where b = % H2O-insoluble solids.
(Note: U.S. Federal standards for frozen fruits, canned fruits, fruit jellies, and preserves make no correction for H2O-insoluble solids,invert sugar, or other substances.)
Reference: JAOAC 15, 384(1932).