RT Journal Article SR Electronic T1 Influence of Soluble Solids in 'Thompson Seedless' Grapes on Airstream Grading for Raisin Quality JF American Journal of Enology and Viticulture JO Am J Enol Vitic. FD American Society for Enology and Viticulture SP 19 OP 25 DO 10.5344/ajev.1970.21.1.19 VO 21 IS 1 A1 Paul Baranek A1 M. W. Miller A1 A. N. Kasimatis A1 C. D. Lynn YR 1970 UL http://www.ajevonline.org/content/21/1/19.abstract AB The concentration of soluble solids in grapes at harvest was compared with raisin quality as measured with an airstream grader calibrated to agree with visual grading standards of the USDA. The statistical relation between the solids (X) and raisin quality, as described by the maturity requirements for US grade B or better raisins, (Y), was Y=-339.25+37.3X-0.8097X2. The correlation coefficient, R=0.867, was highly significant. The percentage of raisins grading B or better improved markedly with slight increases in soluble solids, up to approximately 22° Bal. Harvest date and year had little effect on the influence of soluble solids.