Used AGILENT G7162A 1260 Infinity II

The Standard Optical (G7162A) detector is designed for highest optical performance, GLP compliance, and easy maintenance. They include the following features:

Advanced temperature controlled detector optics ready to use within two hours of installation,
Automatic zero and automatic purge combined with a recycle valve for automatic solvent recycling allow uninterrupted operation,
Durable tungsten lamp with a life expectancy of 40000 hours,
Automatic light intensity control circuit to ensure the the optimum performance of the optics,
Integrated diagnostics for efficient troubleshooting,
Built-in refractive index calibration,
Built-in refractive index calibration,
Front access to valves and capillaries for easy maintenance

Specifications:

Detection type: Refractive Index
Refractive Index Range: 1.00 – 1.75 RIU, calibrated
Measurement range: ±600·10-6 RIU
Optical zeroing: Digitally via software, manually via set screw
Optics temperature control: 5° C above ambient to 55°C
Sample cell:
Volume: 8 µL
Maximum pressure: 5 bar (0.5 MPa)
Maximum flow rate: 5 mL/min
Valves: Automatic purge and automatic solvent recycle
Volumes:
Inlet port to sample cell 62 µL
Inlet port to outlet port 590 µL
Liquid contact materials: 316 stainless steel, PTFE, and quartz glass
pH range: 2.3-9.5
Performance specifications:
Short term nouse: