Spectra/Chrom® Model 280 UV Detector

The Spectra/Chrom Model 280 UV detector is a fixed wavelength flow-through spectrophotometer specifically engineered for use in chromatography. It features a direct reading digital output and a dual beam optical system that allows the automatic subtraction of a solvent background even in the presence of a rapidly changing gradient.

The Spectra/Chrom Model 280 UV Monitor comes complete with filters for operation at 254 and 280 nm and a dual 5 mm pathlength flow cell.

The Model 280 UV detector may be ordered as part number 142600 ($4232.00) for 115 V (US & Canada) use or as part number 142602 ($4199.00) for 230 V (European) use.

Features of the Model UV Detector Include:

• Dual-beam Optics
• Cold-room Compatible
• Digital Readout
• Detection Limit 3 x 10^-4AU
• 3 Flow Cells available

Spectra/Chrom UV Detector Technical Specifications

Power Requirements: 115 +/- 20 VAC 230 +/- 40 VAC 20 VA Line Frequency: 45 to 65 Hz Stability: Maximum drift 0.0005 AU per hour after 30 minute warm-up Rise Time: 10-90% rise time is 0.6 sec on 0.5 AU range

Full-Scale Absorbance Ranges: 0.01, 0.02, 0.05, 0.1, 0.2, 0.5, and 1.0 Absorbance Units Linearity: Maximum error 1.5% of full scale at 254 nm Noise Level: less than 0.0003 AU at 254 nm with dry flow paths after 30 minute warm-up Weight: 4.1 kg (9 lb) Dimensions: 9.25 x 4.75 x 8 inch 23.5 x 12 x 20.3 cm w x h x l Operating Temperature: 0°C to 40°C, noncondensing Display Accuracy: +/- 3 counts

Optional Accessories for the Spectra/Chrom UV Monitor

Part No.	Description	Price (US$)
142608	254/280 nm Filter slide. (This combination slide is included with the Spectra/Chrom UV Monitor.)	646.00
142642	5 mm pathlength dual flow cell. (This flow cell is included with Spectra/Chrom UV Monitor.) Illuminated volume 34 µL; hold-up volume 134 µL (per flow path).	517.00
142644	2 mm pathlength dual flow cell. Illuminated volume 14 µL; hold-up volume 54 µL (per flow path).	588.00
142640	10 mm pathlength dual flow cell. Illuminated volume 68 µL; hold-up volume 268 µL (per flow path).	588.00

The Spectra/Chrom UV Monitor is CE marked.

An alternate description of the Spectra/Chrom UV Monitor may be found here and here.