Specification; Measurement range 0-30% (more than 3% dilution measurement) Accuracy 0 ~ 3% less than: ± 0.05% ± 0.05% ~ 3% ± 0.5% Resolution 0.01% ± 0.05% ~ 3% ± 0.5% Calibration point Manually 1 point (3%) Measured temperature 0 ~ 50 ℃ Temperature correction Automatic Minimum amount of sample 40ml Power AC100V household power outlet or battery 9V (006P) Size and weight Body of 170 × 110 × 65 (mm) · 450g accessories for creating salt calibration solution (min 500cc) standard solution (3%) measuring vessel AC Adapter Carrying Case