| Parameters/Model | RFT-A731 | RFT-A733 |
| Measuring range | Refractive index nD: 1.30000-1.70000 Brix (BX): 0-100% |
Refractive index nD: 1.30000-1.70000 Brix (BX): 0-100% |
| Measuring accuracy | Refractive index nD: ±0.0002 Dissolved solids Brix: ±0.1% |
Refractive index nD: ±0.0002 Dissolve solids Brix: ±0.1% |
| Measuring resolution | Refractive index nD: ±0.00001 Dissolved solids Brix: ±0.01% |
Refractive index nD: ±0.00001 Dissolved solids Brix: ±0.01% |
| Temperature | Temperature display range: 0-90℃ | Temperature display range: 0-90℃ |
| Thermostatic control range | —— | 10-60℃ |
| Temperature control accuracy | —— | ±0.1℃ |
| Interface | RS232/USB/U Disk | RS232/USB/U Disk |
| Display | 7-inch color touch screen | 7-inch color touch screen |
| Weight | 9kg | 9kg |
| Overall dimensions | 500mm×330mm×220mm | 500mm×330mm×220mm |