cytiva Monitor UVis-920, Operating Instructions Manual, Page: 74 / 94

Operating data
Parameter Specification
Wavelength range 200 to 700 nm, changeable wavelength
filter units
Filter center wavelength accuracy ±2 nm
Filter bandwidth < 10 nm
Linearity < 5% deviation up to 2 AU at 280 nm
with ferric sulphate in 0.1 M sulphuric
acid
Short term noise (0.5–1 min)
1 , 2
< 2x10
-4
AU at 280 nm
Long term noise (1–10 min)
1, 2
< 2x10
-4
AU at 280 nm
Drift
2
< 2x10
-4
AU/h at 280 nm
1
Measured with water at 1 mL/min, time constant 1 second, 10 mm flow cell.
2
Typical values at room temperature after 2 hours with lamp on.
UV flow cell, 2 and 10 mm
Parameter Specification
Recommended maximum flow rate 100 mL/min
Maximum pressure 2 MPa (20 bar, 290 psi)
Backpressure Maximum 0.5 bar at 2 mL/min with
water at 25°C
Liquid temperature range 4°C to 40°C
Optical path length, 2 mm cell 2 mm
Optical path length, 10 mm cell 10 mm
Cell volume, 2 mm cell 2 μL
Cell volume, 10 mm cell 8 μL
Wetted materials PTFE (polytetrafluoroethylene)
PEEK (polyetheretherketone)
Titanium (palladium alloy)
Quartz (synthetic fused silica)
pH stability range 1-13, 13-14 (< 1 days exposure)
8 Reference information
8.1 Specifications
74 Monitor UVis-920 Operating Instructions 29055049 AF