J257 Wide Range Refractometer
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Note: this service is for Research Use Only and Not intended for clinical use.
Rudolph Research's J257 is designed as a multipurpose automatic refractometer for a broad range of (RI) refractive index measurement applications. Many laboratories need the versatility of a wide range refractometer as they measure many varied samples. The J257 measures the widest possible range of Refractive Index from 1.26 to 1.72 RI, which means that this instrument can measure many materials that a refractometer with only a food refractive index range of 1.33-1.53 cannot.
Applications
The J257 is suitable for the measurement of pharmaceutical, chemical, petroleum products and flavor.
Specifications
| Measurement Range | Refractive Index 1.26-1.72 Brix 0-100 |
| Accuracy | Refractive index ±0.0001 Brix ±0.01 |
| Reproducibility | Refractive index ±0.0001 Brix ±0.1 |
| Resolution | Refractive index ±0.0001(Standard), ±±0.000001 (Optional) Brix ±0.1 |
| Temperature Control Range (°C) (within 10°C of ambiant) | 5°C to 90°C |
| Operating System | Embedded Windows 7 |
| Measurement Scales | Refractive Index (nD), Brix (% Sucrose), and up to 100 custom programmed scales |
| Temperature control reproducibility | ±0.01° |
| Ambient temperature limit | 5°C to 40°C |
| Temperature correction range | 4°C to 95°C (for sucrose solutions) |
| Sample temperature limit | -20°C to 250°C |
| Optical wavelength | 589.3nm (NaD line) |
| Operating dimensions/weight | L: 17 1/4 inches W: 12 inches H: 13 inches / 23 lbs. L: 43.5 cm W: 30.5 cm H: 33 cm /10.4 kg |
| Shipping dimensions/weight | L: 27 inches W: 21inches H:17 inches /30 lbs. gross weight L: 68.58cm W: 52 cm H: 43.18 cm /13.6 kg |
| Power requirements | 100 - 240 volts, 50 Hz - 60 Hz |
Strengths
Smart Measure: The J257 model Series know when a sample is loaded on the prism and will read automatically. The instrument will not read if the prism is not cleaned properly.
Improve your Process with Trend Analysis: Trend Analysis allows you to save a measurement into a method history to track long term stability of your unique methods.
Embedded Windows 7 Operating System for Complete Communication Flexibility: Direct connection to LIMS or Server, save data in PDF or Excel files. No PC needed. No other brand offers the flexibility of an Embedded Windows 7 Operating System.
Flat Easy To Clean Prism: The flat easy to clean prism is a Rudolph trademark. Sticky, difficult to clean or acidic samples are no problem with Rudolph's optional Hastelloy dish.
Do not know how to place an order, please refer to the flow chart shown below.
Submit quotation request |
A technical manager will contact you within 24 hours |
You will review and approve the final price and place an order |
Confirm with you and make the payment |
Instruct you to ship your samples and form |
Analytic report delivery |
