Differential Refractometer with Extended Range
256 Times the Detection Power
50 Times the Dynamic Range
Absolute Refractive Index Determination.
The Optilab® T-rEX (refractometer with EXtended range) is an Refractive Index detector with 256 times the detection power and 50 times the dynamic range of every RI detector in existence today. Using a combination of cutting-edge semiconductor photodiode technology and proprietary computer algorithms, the T-rEX achieves an unprecedented combination of sensitivity and range.
For example, there are no range or gain settings. The full range of instrument detection is always present, and the full sensitivity exists over the entire range.
The rEX also has a flow cell with a total volume of only 7.4 uL -- 25% less than the leading refractometers available today. This translates into minimized band broadening and better temperature stability.
The Optilab® rEX can also do something no other on-line Refractive Index detector can: it can measure the absolute refractive index of a solution. In addition, it can measure the dn/dc of a solvent at the same wavelength of light as the light scattering instrument. And just to make sure it can't be matched, you can replace the light source in the T-rEX for other wavelengths (e.g. 690, 633, 488, etc.)!
The new Optilab® T-rEX shares the ability its predecessor (the Optilab® rEX) to go to below ambient temperatures as easily as above ambient. No hassle temperature control can be programmed down to 4°C or as high as 50°C. Compatible with all HPLC systems.
Wyatt Technology is the world leader in providing the most advanced macromolecular and nanoparticle characterization tools. These instruments and software may be used to determine the absolute molecular weight and or size of macromolecules and nanoparticles and include: multi-angle light scattering, dynamic light scattering, high through-put dynamic light scattering, field flow fractionation, refractive index and viscometry detection.
Differential Refractive Index Range & Sensitivity: Range (RIU) -0.0047 — + 0.0047 Peak-to-peak noise (RIU)* ± 7.5 x 10 -10
High Concentration Option T-rEX: Range (RIU) -0.0026 — + 0.034 Peak-to-peak noise (RIU)* ±1.5 x 10-9
Fluid Volumes: Flow cell 7.4 μL Inlet tubing (0.010” ID) 44 μL Outlet tubing (0.030” ID) 370 μL
Dynamic Range: 22+ bits only via digital communication
Response Time: 0.1 - 5 seconds, user selectable
Absolute Refractive Index Range and Sensitivity: 1.2 - 1.8 RIU (sensitivity of ± 0.002 RIU)
Light Source: 660 nm standard; Other wavelengths available Sample Temperature
Control Range: 4°C - 50°C, temperature regulated
Temperature Regulation: ± 0.005°C
Maximum System Pressure: 30 psi (2 bar)
Maximum Cell Pressure: 100 psi (7 bar)
Safety Sensors: Vapor and liquid (leak)
CPU: 2GHz VIA C7 Processor
Display / User Interface: 6.4˝ 16-bit color high resolution LCD display
Inputs and Outputs: Analog In 16 bit ± 10V A/D for auxiliary user data Analog Out 18 bit D/A for dRI data, ± 10V or ± 1V output
Inputs: Zero, Purge, Recycle, Autoinject, Alarm In
Output: Autoinject Retransmit, Alarm Out, External Solenoid
Recycle Valve. 12VDC solenoid valve
(sold separately, or user supplied) to switch
automatically between waste and recycle
Digital Communication: Ethernet
Dimensions: 168 mm x 357 mm x 595 mm (H x W x D)
Weight: 11.5 kg
Power Requirements: Universal input, AC 100/115/220/240 V, 50/60 Hz
Power: 480 W max, 86 W typical
Wyatt Technology is the recognized leader in light scattering instrumentation and software for determining the absolute molar mass, size, charge and interactions of macromolecules and nanoparticles in solution. These tools include: in-line multi-angle static light scattering, high-throughput dynamic light scattering, differential refractometry, electrophoretic mobility, differential viscosity, field flow fractionation and automated composition gradients.