Description
Using a combination of cutting-edge semiconductor photodiode technology and proprietary computer algorithms, the Optilab achieves an unprecedented combination of sensitivity and range. These features mean that it addresses both standard chromatographic applications and some challenges unique to light scattering measurements such as high concentrations, determination of sample refractive increments (dn/dc) and solvent refractive index.
Specifications:
Differential Refractive Index:
- Standard Optilab:
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- Range (RIU): -0.0047 to +0.0047
- Peak-to-peak noise (RIU)1 : ± 7.5 x 10 -10
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- High Concentration Option:
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- Range (RIU): -0.0026 to +0.034
- Peak-to-peak noise (RIU)1 : ± 1.5 x 10 -9 RIU
- Response Time (User Selectable): 0.1 to 5 seconds
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Absolute Refractive Index:
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- Range (RIU): 1.2 to 1.8
- Sensitivity (RIU): ± 0.002
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Fluidics:
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- Band Broadening2 : < 12 μL
- Fill Volume (inlet tubing + flow cell): 51.4 μL
- Outlet tubing (0.030″ ID): 370 μL
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Pressure:
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- Back pressure created at inlet port (@ 0.5 mL/min H2O, 20 °C): <22 psi (1.5 bar)
- Maximum permissible back pressure allowed at outlet port: 30 psi (2 bar)
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Sample Temperature:
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- Control Range: 4°C to 65°C
- Regulation: ±0.005°C
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Light Source: Optilab: 660 nm; Optilab HC: 660 nm standard, optionally 488 nm, 785 nm or 940 nm
Electronics:
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- Digital Output: 22+ bits @ 10 Hz
- Analog Output : ± 10 V or ± 1 V output, 18 bits resolution
- Computer Interface: Ethernet
- Front Panel Display: 7″ (178 mm), high-resolution, multi-touch display for viewing/setting signals, instrument settings and diagnostics
- Auxiliary I/O:
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- Inputs: Analog In (16 bits, ± 10 V A/D), Zero dRI, Purge, Recycle In, Autoinject In, Alarm In
- Outputs: Autoinject Retransmit, Alarm Out, Recycle Out (to switch Orbit between waste and recycle)
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Dimensions: 58 cm (L) x 36 cm (W) x 18 cnm (H)
