Refractometer Model Comparison Guide
| Refractometer Models/Specifications | ||||||
| J57HA | J57HA-UF-SP | J57TPN | J157-CC | J157PTW | J157KVP | |
| Measurement Range | 1.33 – 1.53 RI, 0 – 100% Brix, 1.0000 – 1.0400 Urine SG | |||||
| Measurement Scales | Refractive Index (RI) Brix (% sucrose), Temperature Corrected Brix, Temperature Corrected RI, Urine SG | Refractive Index (RI) Brix (% sucrose), Temperature Corrected Brix, Temperature Corrected RI, Urine SG and 100 User Programmable Scales | ||||
| Resolution | 0.00001 RI, 0.01 Brix, 0.0001 Urine SG | |||||
| Reproducibility | ±0.00002 RI, ±0.015 Brix, ±0.0001 Urine SG | |||||
| Accuracy | 0.00004 RI, 0.01 Brix, 0.0001 Urine SG | |||||
| Control Temperature | 20°C and 25°C | 15°C to 50°C | 15°C to 40°C | 15°C to 30°C | ||
| Ambient Temperature Limit | 10°C to 40°C | |||||
| Sample Temperature Limit | -20°C to +250°C | |||||
| Temperature Correction Range | 18 to 95°C (for pure sucrose) | |||||
| Wavelength | 589.3nm (other wavelengths available) | |||||
| Light Source | Light Emitting Diode (exp life > 1,000,000 measurements) | |||||
| Calibration | 1, 2 or 10 point using water or NIST traceable standards | |||||
| Communication Interface | 2 RS232 ports, 1 parallel port, 1 auxiliary port and USB adaptor available | |||||
| Refractometer Models/Options | ||||||
| J57HA | J57-HA-UF-SP | J57TPN | J157-CC | J157PTW | J157KVP | |
| Concave Cover, No Sample Contact | Not Available | CC Option Standard | Not Available | |||
| Contact Sample Presser | CP Option Available | |||||
| Automeasure Feature | AM Option Available | |||||
| Hastelloy Feature | H Option Available | Not Available | H Option Available | |||
| Small Volume Sample Well (100 μ liters) | SV Option Available | SV Option Available | ||||
| Micro Flow Cell with Sealed Prism | Not Available | UF-SP Option Available | Not Available | |||
| Pour In Options | Not Available | PTW Option Standard | KVP Option Standard | |||
| Data Storage | Not Available | MMC Option Available | Not Available | |||
| Models/Specifications | ||||||
| J57WR | J57WR-UF-SP | J257-CC | J357-NDS | |||
| Measurement Range | 1.26 – 1.70 RI, 0 – 100% Brix | |||||
| Measurement Scales | Refractive Index (RI) Brix (% sucrose) | Refractive Index (RI) Brix (% sucrose) 100 User Programmable Scales | ||||
| Resolution | 0.0001 RI, 0.01 Brix | 0.0001 RI, 0.01 Brix | 0.00001 RI, 0.01 Brix | |||
| Reproducibility | ±0.0001 RI, ±0.1 Brix | ±0.0001 RI, ±0.1 Brix | ±0.00002 RI, ±0.015 Brix | |||
| Accuracy | 0.0001 RI, 0.1 Brix | 0.0001 RI, 0.1 Brix | 0.00004 RI, 0.03 Brix | |||
| Control Temperature | 20°C and 25°C | 15°C to 70°C | 15°C to 100°C | |||
| Ambient Temperature Limit | 10°C to 40°C | |||||
| Sample Temperature Limit | -20°C to +250°C | |||||
| Temperature Correction Range | 18 to 95°C (for pure sucrose) | |||||
| Wavelength | 589.3nm (other wavelengths available) | |||||
| Light Source | Light Emitting Diode (exp life > 1,000,000 measurements) | |||||
| Calibration | 1,2 or 10 point using water or NIST traceable standards | |||||
| Communication Interface | 2 RS232 ports, 1 parallel port, 1 auxiliary port and USB adaptor available | |||||
| Refractometer Models/Options | ||||
| J57WR | J57WR-UF-SP | J257-CC | J357-NDS | |
| Concave Cover, No Sample Contact | Not Available | CC Option Standard | ||
| Automeasure Feature | AM Option Available | |||
| Contact Sample Presser | CP Option Available | |||
| Hastelloy Feature, Acid Resistance | H Option Available | Not Available | H Option Available | |
| Small Volume Sample Well (100 μ liters) | SV Option Available | SV Option Available | ||
| Temperature Boost | Not Available | TB Option Available | ||
| 21 CFR Part 11 Compliance / Data Storage | MMC Option Available | |||
