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Instrument Database:
Gilson, Inc - 112 UV Detector
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| Year of introduction |
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| Status |
available |
| Company |
Gilson, Inc
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| Categories |
Chromatography: LC-Detector: UV/Vis
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Rugged, economical, fixed-wavelength detector for analytical or preparative HPLC and LC. A front panel knob allows selection of the wavelength to monitor the absorbency of almost any sample.
- Provides detection at 254 and 280 wavelengths
- Fixed-wavelength design provides increased sensitivity and durability
- Event-marking function allows convenient marking of the point of injection or advance of a fraction collector on the recorder or data system
- 10-mm pathlength analytical flow cell offers excellent sensitivity ranging from 0.001–1 AUFS (Absorbance Units, Full Scale)
- Dual-beam optics ensure equal illumination of both the sample cell and the reference aperture to maintain baseline stability at high sensitivity
- Easy-to-change lamp and filter assemblies for selecting wavelengths
- Easy, one-step baseline function helps reduce operating and setup time
Applications
- Biological samples, industrial chemicals and small-molecule analysis via HPLC
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| Specifications |
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Manufacturing Standards
Meets applicable safety and EMC certification standards; UL and CE certified
Autozero Range
–0.5 to + 1 AU, to within 5 x 10-5 AU; front panel or remote activation
Communication Interface
Event and autozero inputs; three channels output data to a recorder
Detector Type
UV silicon photodiode
Drift
3 x 10-4 AU/hr
Environmental Conditions
Indoor use
Altitude: up to 2000 m
Temperature range: 5–40°C
Air pressure: 75–105 kPa
Pollution degree: 1 or 2, in accordance with IEC 66
Humidity: Maximum relative humidity 80% for temperatures up to 31°C, decreasing linearly to 50% relative humidity at 40°C
Event Marker
Negative deflection on trace; front panel or remote activation
Flow Cells
The following fused quartz flow cells are available:
HPLC Path (mm): 10.0 Volume (µm): 11.0 psi: 1000
LC
Path (mm): 10.0 Volume (µm): 40.0 psi: 1000
Microbore
Path (mm): 5.0 Volume (µm): 1.3 psi: 1000
Preparative
Path (mm): 2.0 Volume (µm): 10.0 psi: 1000 Preparative Path (mm): 0.5 Volume (µm):2.5 psi: 1000
Preparative
Path (mm): 0.1 Volume (µm): 0.3 psi: 1000
Flow Cell Sensitivity
<4 x 10-4 AU for flow step of 0.5–2 mL/min with methanol
Front Panel
LCD indicator shows percent of full-scale output
Lamps
Standard: Mercury (254 nm), life of 2000 hours; Phosphor-coated Mercury (280 nm), life of 500 hours
Lamp Warm-up Time
One hour maximum
Monochromator
Dual beam with interference filter, to monitor at a single wavelength
• Range: 254 and 280 nm standard (selectable on front panel)
•Spectral bandwidth: 0.2 nm at 254 nm; 12 nm at 280 nm
Noise with Air Block Installed
254 nm, short term, peak-to-peak, 4 x 10-5 AU/cm; long term, peak-to-peak, 6 x 10-5 AU
280 nm, short term, peak-to-peak, 6 x 10-5 AU/cm; long term, peak-to-peak, 6 x 10-5 AU
Power Requirements
Frequency: 50–60 Hz
Voltage: 100–120 or 220–240V; mains voltage fluctuations not to exceed ±10% of the nominal voltage
Current rating: 1.0A for 100–120V, or 0.5A for 220–240V
Reference Chamber
Air
Sensitivity Range
0.001 to 1.0 AU with standard flow cell installed. Up to 100 AU when 0.1 mm flow cell is used. Selectable on front panel.
Temperature Sensitivity
3.0 x 10-4/°C for temperature change from 21° to 24°C
Time Constant
0.1, 0.2, 0.5, 1, 2, or 5 seconds; selectable on front panel
Dimensions (w x d x h)
32 x 32 x 13 cm (12.6 x 12.6 x 5.2 in.)
Weight
8 kg (17.6 lbs.)
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