Refractometers Abbe Refractometers Model MeasurementRange (Brix/nD) ±% Accuracy Measurement Temperature Range DR-A1 0.0-95.0%/1.3000-1.7100 0.1%/0.0002 5.0 to 50.0°C DR-M2 1.2746-1.7379 (Multiwavelength) nD 0.0002 5.0 to 50.0°C DR-M4 1.4304-1.9164 (Multiwavelength) nD 0.0002 5.0 to 50.0°C NAR-1T 0.0-95.0%/1.3000-1.7000 0.1%/0.0002 0 to 50°C NAR-2T 0.0-95.0%/1.3000-1.7000 0.1%/0.0002 0 to 120°C NAR-3T 0.0-95.0%/1.3000-1.7000 0.05%/0.0001 0.0 to 50.0°C NAR-4T nD 1.4700-1.8700 nD 0.0002 0 to 50°C     Digital Pocket Refractometers Model Measurement Range (Brix/nD) ±% Accuracy Measurement Temperature Range PAL -1 0.0-53.0% 0.2% 10 to 40°C PAL -2 45.0-93.0% 0.2% 10 to 40°C PAL -3 0-93.0% 0.2% 10 to 40°C     Hand-Held Refractometers Model Measurement Range (Brix/nD) ±% Accuracy Measurement Temperature Range ATC -1E* 0-32% 0.2% 10 to 30°C ATC -2E* 28-62% 0.2% 10 to 30°C ATC -20E* 0-20% 0.1% 10 to 30°C N-1 alpha 0-32% 0.2%   N-2E 28-62% 0.2%   N-3E 58-90% 0.2%   N-4E 45-82% 0.2%   N-10E 0-10% 0.1%   N-20E 0-20% 0.1%   N-50E 0-50% 0.5%   N-3000E nD 1.435-1.520 0.001 nD   H-50 0-50% 0.5% High Temperature H-80 30-80% 0.5% High Temperature H-93 53-93% 0.5% High Temperature R5000 nD 1.333-1.520 nd 0.001 5 to 40°C