â·ÃÊͺ¶ÒÁÃÒ¤Ò Use this refractometer to test solutions with a higher sugar content, such as fruit juice concentrates, canned fruits containing added sugar, or ketchup as well as for egg yolk. Sugar Refractometer 28 ~ 62% Sper Scientific 300002 Descriptions: Place a drop or two of sample on the prism and read the results Use this refractometer to test solutions with a higher sugar content, such as fruit juice concentrates, canned fruits containing added sugar, or ketchup as well as for egg yolk. Comes with a hard carrying case and calibration tool. Certificate of calibration available. Specifications Dimensions: 6¼" x 1½" (159 x 38 mm) Weight: 3.2 oz. (90 g) Range: 28-62% brix Resolution: 0.2% Accuracy: ±0.2% 300002 Brix Refractometer Sper Sceintific à¤Ã×èͧÇÑ´¤ÇÒÁËÇÒ¹ Ẻ¡ÅéͧÊèͧ