The Dionex UVD 340U UV/VIS Detector has a 200–595 nm, programmable wavelength range.

Specifications:
- Wavelength Range: 200–595 nm, programmable
- Noise: < ± 5 µAU (dry cell, 254 nm,8 nm, 1 s)
- Drift: < 500 µAU/h
- Wavelength Accuracy: ± 0.75 nm (UV), ± 1.5 nm (Vis)
- Bandwidth: 1.9–400 nm, programmable
- Linearity: ≤1% at 1.5 AU
- Measuring Range: 0–2 AU
- Time Constant: 0.1–4.0 s, programmable
- Power-up Wavelength Verification: Automatic via internal holmiumoxide filter
- Wavelength Calibration: Automatic or on demand; over the entire wavelength range
- Optical Bench: Photodiode array bench withoutmoving parts
- Pixel Resolution: 1.9 nm (UV), 3.3 nm (Vis)
- Lamp: Deuterium Lamp
- Standard Cell: 10 µL, 9 mm, 10 MPa (1450 psi)
- Biocompatible Cell (optional): 10 µL, 9 mm, 10 MPa (1450 psi)
- Preparative Cell (optional): 6 µL, 2 mm, 10 MPa (1450 psi)
- Micro Capillary Cell (optional): 0.14 µL, 8 mm, 40 MPa (5800 psi)