Antifreeze Refractometer

Antifreeze Refractometer have only one unit system: °F. With the indication of the percentage we may know the freezing point of either ethylene glycol or propylene glycol based cooling systems. And they can also be used to test the concentration of ethylene glycol or propylene glycol in antifreeze liquids. The RHA-503ATC has Automatic Temperature Compensation System. ModelMeasurementRangeMin.Div.AccuracyMarksRHA-100E:-84°F-32°F P:-60°F-32°F B:1.100-1.400sg5°F 5°F 0.01sg±5°F ±5°F ±0.01sgWithoutATCRHA-100ATC E:-84°F-32°F P:-60°F-32°F B:1.100-1.400sg5°F 5°F 0.01sg ±5°F ±5°F ±0.01sgWithATCRHA-200 E:-60°C-0°C P:-50°C-0°C B:1.100-1.400sg 5°C 5°C 0.01sg±5°C ±5°C ±0.01sg WithoutATCRHA-200ATC E:-60°C-0°C P:-50°C-0°C B:1.100-1.400sg5°C 5°C 0.01sg ±5°C ±5°C ±0.01sg WithATCRHA-300 E:-60°F-32°F P:-50°F-32°F B:1.15-1.30sg10°F 10°F 0.01sg±10°F ±10°F ±0.01sg WithoutATCRHA-300ATCE:-60°F-32°F P:-50°F-32°F B:1.15-1.30sg10°F 10°F 0.01sg ±10°F ±10°F ±0.01sgWithATCRHA-503B:1.100-1.400sg E:-50°C-0°C P:-50°C-0°C C:-40°C-0°C0.01sg 5°C 5°C 5°C±0.01sg ±5°C ±5°C ±5°C WithoutATCRHA-503ATCB:1.100-1.400sg E:-50°C-0°C P:-50°C-0°C C:-40°C-0°C0.01sg 5°C 5°C 5°C±0.01sg ±5°C ±5°C ±5°CWithATC