112 UV Detector :: Mandel Scientific Company Inc.

112 UV Detector

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.

Cat. No. GA-0310521

Features:

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

Specifications:

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:

Flow Cell	Path (mm)	Volume (µL)	psi
HPLC	10.0	11.0	1000
LC	10.0	40.0	1000
Microbore	5.0	1.3	1000
Preparative	2.0	10.0	1000
Preparative	0.5	2.5	1000
Preparative	0.1	0.3	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.)