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