数字式糖度检测折光仪 型号 测试范围 较小刻度 精度 LDB35 Brix:0~35% Refractive Index:1.3330~1.3900 0.1% 0.0001 ±0.2 ±0.0003 LDB45 Brix:0~45% Refractive Index:1.3330~1.4098 0.1% 0.0001 ±0.2 ±0.0003 LDB65 Brix:28~65% Refractive Index:1.3770~1.4535 0.1% 0.0001 ±0.2 ±0.0003 LDB92 Brix:58~92% Refractive Index:1.4370~1.5090 0.1% 0.0001 ±0.2 ±0.0003